The compound described by Gd3Y5O12 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are six inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(1), one O(12), one O(2), one O(21), one O(5), and one O(9) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Gd site, Gd(2) is bonded to one O(14), one O(15), one O(19), one O(23), one O(24), and one O(4) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra, and  an edgeedge with one Y(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the third Gd site, Gd(3) is bonded to one O(13), one O(16), one O(20), one O(3), one O(7), and one O(8) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(8)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the fourth Gd site, Gd(4) is bonded to one O(10), one O(14), one O(17), one O(20), one O(21), and one O(24) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the fifth Gd site, Gd(5) is bonded to one O(11), one O(15), one O(18), one O(23), one O(3), and one O(5) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(8)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the sixth Gd site, Gd(6) is bonded to one O(12), one O(16), one O(18), one O(21), one O(24), and one O(3) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. There are ten inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(10), one O(13), one O(2), one O(22), one O(24), and one O(3) atom to form YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra, and  an edgeedge with one Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Y site, Y(2) is bonded to one O(11), one O(14), one O(2), one O(22), one O(4), and one O(7) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. In the third Y site, Y(3) is bonded to one O(1), one O(16), one O(19), one O(22), one O(7), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fourth Y site, Y(4) is bonded to one O(12), one O(13), one O(2), one O(4), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fifth Y site, Y(5) is bonded to one O(10), one O(11), one O(17), one O(18), one O(22), and one O(6) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the sixth Y site, Y(6) is bonded to one O(15), one O(18), one O(21), one O(4), one O(7), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the seventh Y site, Y(7) is bonded to one O(12), one O(14), one O(17), one O(19), one O(5), and one O(8) atom to form YO6 octahedra that share  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the eighth Y site, Y(8) is bonded to one O(13), one O(17), one O(20), one O(23), one O(5), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the ninth Y site, Y(9) is bonded to one O(1), one O(11), one O(16), one O(20), one O(23), and one O(6) atom to form YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the tenth Y site, Y(10) is bonded to one O(1), one O(10), one O(15), one O(19), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), one Y(10), one Y(3), and one Y(9) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid,  an edgeedge with one O(9)GdY3 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the second O site, O(2) is bonded to one Gd(1), one Y(1), one Y(2), and one Y(4) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid,  an edgeedge with one O(4)GdY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the third O site, O(3) is bonded to one Gd(3), one Gd(5), one Gd(6), and one Y(1) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid, and  an edgeedge with one O(13)GdY3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Gd(2), one Y(2), one Y(4), and one Y(6) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Gd(1), one Gd(5), one Y(7), and one Y(8) atom to form OGd2Y2 tetrahedra that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid, and  an edgeedge with one O(9)GdY3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(10), one Y(4), one Y(5), and one Y(9) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid,  an edgeedge with one O(10)GdY3 trigonal pyramid,  an edgeedge with one O(11)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Gd(3), one Y(2), one Y(3), and one Y(6) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(4)GdY3 trigonal pyramid,  an edgeedge with one O(9)GdY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the eighth O site, O(8) is bonded to one Gd(3), one Y(10), one Y(4), and one Y(7) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the ninth O site, O(9) is bonded to one Gd(1), one Y(3), one Y(6), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Gd(4), one Y(1), one Y(10), and one Y(5) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid,  an edgeedge with one O(22)Y4 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Gd(5), one Y(2), one Y(5), and one Y(9) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(22)Y4 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Gd(1), one Gd(6), one Y(4), and one Y(7) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Gd(3), one Y(1), one Y(4), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Gd(2), one Gd(4), one Y(2), and one Y(7) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(4)GdY3 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Gd(2), one Gd(5), one Y(10), and one Y(6) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(4)GdY3 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Gd(3), one Gd(6), one Y(3), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Gd(4), one Y(5), one Y(7), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid, and  an edgeedge with one O(10)GdY3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Gd(5), one Gd(6), one Y(5), and one Y(6) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid, and  an edgeedge with one O(11)GdY3 trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Gd(2), one Y(10), one Y(3), and one Y(7) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the twentieth O site, O(20) is bonded to one Gd(3), one Gd(4), one Y(8), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid, and  an edgeedge with one O(17)GdY3 trigonal pyramid. In the twenty-first O site, O(21) is bonded to one Gd(1), one Gd(4), one Gd(6), and one Y(6) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid, and  an edgeedge with one O(9)GdY3 trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Y(1), one Y(2), one Y(3), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(10)GdY3 trigonal pyramid,  an edgeedge with one O(11)GdY3 trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Gd(2), one Gd(5), one Y(8), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid, and  an edgeedge with one O(11)GdY3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Gd(2), one Gd(4), one Gd(6), and one Y(1) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid, and  an edgeedge with one O(10)GdY3 trigonal pyramid. is represented by the CIF file [CIF]
data_Gd3Y5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.245
_cell_length_b   9.252
_cell_length_c   9.252
_cell_angle_alpha   109.487
_cell_angle_beta   109.415
_cell_angle_gamma   109.449
_symmetry_Int_Tables_number   1
_cell_volume   609.687
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Gd  Gd0  1  0.468  0.250  0.719  1.0
  Gd  Gd1  1  0.533  0.750  0.283  1.0
  Gd  Gd2  1  0.031  0.749  0.781  1.0
  Gd  Gd3  1  0.751  0.219  0.467  1.0
  Gd  Gd4  1  0.249  0.282  0.032  1.0
  Gd  Gd5  1  0.281  0.032  0.250  1.0
  Y  Y6  1  0.501  0.999  0.999  1.0
  Y  Y7  1  0.717  0.967  0.751  1.0
  Y  Y8  1  0.749  0.718  0.968  1.0
  Y  Y9  1  0.250  0.781  0.533  1.0
  Y  Y10  1  0.966  0.250  0.217  1.0
  Y  Y11  1  0.499  0.501  0.501  1.0
  Y  Y12  1  0.000  1.000  0.499  1.0
  Y  Y13  1  0.217  0.467  0.749  1.0
  Y  Y14  1  1.000  0.500  0.001  1.0
  Y  Y15  1  0.784  0.533  0.250  1.0
  O  O16  1  0.732  0.460  0.971  1.0
  O  O17  1  0.511  0.039  0.772  1.0
  O  O18  1  0.263  0.031  0.988  1.0
  O  O19  1  0.458  0.728  0.491  1.0
  O  O20  1  0.235  0.228  0.767  1.0
  O  O21  1  0.043  0.532  0.271  1.0
  O  O22  1  0.767  0.739  0.728  1.0
  O  O23  1  0.989  0.761  0.529  1.0
  O  O24  1  0.469  0.513  0.741  1.0
  O  O25  1  0.728  0.270  0.235  1.0
  O  O26  1  0.965  0.230  0.958  1.0
  O  O27  1  0.227  0.986  0.459  1.0
  O  O28  1  0.273  0.728  0.760  1.0
  O  O29  1  0.774  0.011  0.545  1.0
  O  O30  1  0.534  0.489  0.264  1.0
  O  O31  1  0.028  0.768  0.041  1.0
  O  O32  1  0.013  0.239  0.468  1.0
  O  O33  1  0.229  0.264  0.273  1.0
  O  O34  1  0.764  0.772  0.230  1.0
  O  O35  1  0.960  0.468  0.732  1.0
  O  O36  1  0.542  0.275  0.511  1.0
  O  O37  1  0.740  0.968  0.011  1.0
  O  O38  1  0.268  0.542  0.029  1.0
  O  O39  1  0.490  0.959  0.226  1.0
[/CIF]
.
The compound described by Gd3Y5O12 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are six inequivalent Gd sites. In the first Gd site, Gd(1) is bonded to one O(1), one O(12), one O(2), one O(21), one O(5), and one O(9) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Gd site, Gd(2) is bonded to one O(14), one O(15), one O(19), one O(23), one O(24), and one O(4) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra, and  an edgeedge with one Y(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the third Gd site, Gd(3) is bonded to one O(13), one O(16), one O(20), one O(3), one O(7), and one O(8) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(8)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the fourth Gd site, Gd(4) is bonded to one O(10), one O(14), one O(17), one O(20), one O(21), and one O(24) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the fifth Gd site, Gd(5) is bonded to one O(11), one O(15), one O(18), one O(23), one O(3), and one O(5) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(8)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the sixth Gd site, Gd(6) is bonded to one O(12), one O(16), one O(18), one O(21), one O(24), and one O(3) atom to form distorted GdO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. There are ten inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(10), one O(13), one O(2), one O(22), one O(24), and one O(3) atom to form YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra, and  an edgeedge with one Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-56°. In the second Y site, Y(2) is bonded to one O(11), one O(14), one O(2), one O(22), one O(4), and one O(7) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles are 55°. In the third Y site, Y(3) is bonded to one O(1), one O(16), one O(19), one O(22), one O(7), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fourth Y site, Y(4) is bonded to one O(12), one O(13), one O(2), one O(4), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the fifth Y site, Y(5) is bonded to one O(10), one O(11), one O(17), one O(18), one O(22), and one O(6) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the sixth Y site, Y(6) is bonded to one O(15), one O(18), one O(21), one O(4), one O(7), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Gd(6)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra, and  an edgeedge with one Y(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the seventh Y site, Y(7) is bonded to one O(12), one O(14), one O(17), one O(19), one O(5), and one O(8) atom to form YO6 octahedra that share  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the eighth Y site, Y(8) is bonded to one O(13), one O(17), one O(20), one O(23), one O(5), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Gd(1)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(4)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-57°. In the ninth Y site, Y(9) is bonded to one O(1), one O(11), one O(16), one O(20), one O(23), and one O(6) atom to form YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(2)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(6)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  an edgeedge with one Gd(3)O6 octahedra,  an edgeedge with one Gd(5)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 55-57°. In the tenth Y site, Y(10) is bonded to one O(1), one O(10), one O(15), one O(19), one O(6), and one O(8) atom to form distorted YO6 octahedra that share  a cornercorner with one Gd(1)O6 octahedra,  a cornercorner with one Gd(3)O6 octahedra,  a cornercorner with one Gd(4)O6 octahedra,  a cornercorner with one Gd(5)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Gd(2)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(4)O6 octahedra,  an edgeedge with one Y(5)O6 octahedra,  an edgeedge with one Y(7)O6 octahedra, and  an edgeedge with one Y(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Gd(1), one Y(10), one Y(3), and one Y(9) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid,  an edgeedge with one O(9)GdY3 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the second O site, O(2) is bonded to one Gd(1), one Y(1), one Y(2), and one Y(4) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid,  an edgeedge with one O(4)GdY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the third O site, O(3) is bonded to one Gd(3), one Gd(5), one Gd(6), and one Y(1) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid, and  an edgeedge with one O(13)GdY3 trigonal pyramid. In the fourth O site, O(4) is bonded to one Gd(2), one Y(2), one Y(4), and one Y(6) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the fifth O site, O(5) is bonded to one Gd(1), one Gd(5), one Y(7), and one Y(8) atom to form OGd2Y2 tetrahedra that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid, and  an edgeedge with one O(9)GdY3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Y(10), one Y(4), one Y(5), and one Y(9) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid,  an edgeedge with one O(10)GdY3 trigonal pyramid,  an edgeedge with one O(11)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the seventh O site, O(7) is bonded to one Gd(3), one Y(2), one Y(3), and one Y(6) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(4)GdY3 trigonal pyramid,  an edgeedge with one O(9)GdY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the eighth O site, O(8) is bonded to one Gd(3), one Y(10), one Y(4), and one Y(7) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the ninth O site, O(9) is bonded to one Gd(1), one Y(3), one Y(6), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the tenth O site, O(10) is bonded to one Gd(4), one Y(1), one Y(10), and one Y(5) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid,  an edgeedge with one O(22)Y4 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Gd(5), one Y(2), one Y(5), and one Y(9) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(22)Y4 trigonal pyramid, and  an edgeedge with one O(6)Y4 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Gd(1), one Gd(6), one Y(4), and one Y(7) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Gd(3), one Y(1), one Y(4), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Gd(2), one Gd(4), one Y(2), and one Y(7) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid,  an edgeedge with one O(17)GdY3 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(4)GdY3 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Gd(2), one Gd(5), one Y(10), and one Y(6) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(19)GdY3 trigonal pyramid, and  an edgeedge with one O(4)GdY3 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Gd(3), one Gd(6), one Y(3), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Gd(4), one Y(5), one Y(7), and one Y(8) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid, and  an edgeedge with one O(10)GdY3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Gd(5), one Gd(6), one Y(5), and one Y(6) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid, and  an edgeedge with one O(11)GdY3 trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Gd(2), one Y(10), one Y(3), and one Y(7) atom to form OGdY3 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(1)GdY3 trigonal pyramid, and  an edgeedge with one O(8)GdY3 trigonal pyramid. In the twentieth O site, O(20) is bonded to one Gd(3), one Gd(4), one Y(8), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(21)Gd3Y trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(11)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  a cornercorner with one O(8)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(16)Gd2Y2 trigonal pyramid,  an edgeedge with one O(23)Gd2Y2 trigonal pyramid,  an edgeedge with one O(13)GdY3 trigonal pyramid, and  an edgeedge with one O(17)GdY3 trigonal pyramid. In the twenty-first O site, O(21) is bonded to one Gd(1), one Gd(4), one Gd(6), and one Y(6) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(5)Gd2Y2 tetrahedra,  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(10)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(7)GdY3 trigonal pyramid,  an edgeedge with one O(12)Gd2Y2 trigonal pyramid,  an edgeedge with one O(18)Gd2Y2 trigonal pyramid,  an edgeedge with one O(24)Gd3Y trigonal pyramid, and  an edgeedge with one O(9)GdY3 trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Y(1), one Y(2), one Y(3), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(10)GdY3 trigonal pyramid,  an edgeedge with one O(11)GdY3 trigonal pyramid,  an edgeedge with one O(2)GdY3 trigonal pyramid, and  an edgeedge with one O(7)GdY3 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Gd(2), one Gd(5), one Y(8), and one Y(9) atom to form OGd2Y2 trigonal pyramids that share  a cornercorner with one O(14)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(24)Gd3Y trigonal pyramid,  a cornercorner with one O(3)Gd3Y trigonal pyramid,  a cornercorner with one O(1)GdY3 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(9)GdY3 trigonal pyramid,  a cornercorner with one O(6)Y4 trigonal pyramid,  an edgeedge with one O(5)Gd2Y2 tetrahedra,  an edgeedge with one O(15)Gd2Y2 trigonal pyramid,  an edgeedge with one O(20)Gd2Y2 trigonal pyramid, and  an edgeedge with one O(11)GdY3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Gd(2), one Gd(4), one Gd(6), and one Y(1) atom to form OGd3Y trigonal pyramids that share  a cornercorner with one O(12)Gd2Y2 trigonal pyramid,  a cornercorner with one O(15)Gd2Y2 trigonal pyramid,  a cornercorner with one O(16)Gd2Y2 trigonal pyramid,  a cornercorner with one O(18)Gd2Y2 trigonal pyramid,  a cornercorner with one O(20)Gd2Y2 trigonal pyramid,  a cornercorner with one O(23)Gd2Y2 trigonal pyramid,  a cornercorner with one O(13)GdY3 trigonal pyramid,  a cornercorner with one O(17)GdY3 trigonal pyramid,  a cornercorner with one O(19)GdY3 trigonal pyramid,  a cornercorner with one O(2)GdY3 trigonal pyramid,  a cornercorner with one O(4)GdY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(14)Gd2Y2 trigonal pyramid,  an edgeedge with one O(21)Gd3Y trigonal pyramid,  an edgeedge with one O(3)Gd3Y trigonal pyramid, and  an edgeedge with one O(10)GdY3 trigonal pyramid. is represented by the CIF file [CIF]
data_Gd3Y5O12
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.245
_cell_length_b   9.252
_cell_length_c   9.252
_cell_angle_alpha   109.487
_cell_angle_beta   109.415
_cell_angle_gamma   109.449
_symmetry_Int_Tables_number   1
_cell_volume   609.687
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Gd  Gd0  1  0.468  0.250  0.719  1.0
  Gd  Gd1  1  0.533  0.750  0.283  1.0
  Gd  Gd2  1  0.031  0.749  0.781  1.0
  Gd  Gd3  1  0.751  0.219  0.467  1.0
  Gd  Gd4  1  0.249  0.282  0.032  1.0
  Gd  Gd5  1  0.281  0.032  0.250  1.0
  Y  Y6  1  0.501  0.999  0.999  1.0
  Y  Y7  1  0.717  0.967  0.751  1.0
  Y  Y8  1  0.749  0.718  0.968  1.0
  Y  Y9  1  0.250  0.781  0.533  1.0
  Y  Y10  1  0.966  0.250  0.217  1.0
  Y  Y11  1  0.499  0.501  0.501  1.0
  Y  Y12  1  0.000  1.000  0.499  1.0
  Y  Y13  1  0.217  0.467  0.749  1.0
  Y  Y14  1  1.000  0.500  0.001  1.0
  Y  Y15  1  0.784  0.533  0.250  1.0
  O  O16  1  0.732  0.460  0.971  1.0
  O  O17  1  0.511  0.039  0.772  1.0
  O  O18  1  0.263  0.031  0.988  1.0
  O  O19  1  0.458  0.728  0.491  1.0
  O  O20  1  0.235  0.228  0.767  1.0
  O  O21  1  0.043  0.532  0.271  1.0
  O  O22  1  0.767  0.739  0.728  1.0
  O  O23  1  0.989  0.761  0.529  1.0
  O  O24  1  0.469  0.513  0.741  1.0
  O  O25  1  0.728  0.270  0.235  1.0
  O  O26  1  0.965  0.230  0.958  1.0
  O  O27  1  0.227  0.986  0.459  1.0
  O  O28  1  0.273  0.728  0.760  1.0
  O  O29  1  0.774  0.011  0.545  1.0
  O  O30  1  0.534  0.489  0.264  1.0
  O  O31  1  0.028  0.768  0.041  1.0
  O  O32  1  0.013  0.239  0.468  1.0
  O  O33  1  0.229  0.264  0.273  1.0
  O  O34  1  0.764  0.772  0.230  1.0
  O  O35  1  0.960  0.468  0.732  1.0
  O  O36  1  0.542  0.275  0.511  1.0
  O  O37  1  0.740  0.968  0.011  1.0
  O  O38  1  0.268  0.542  0.029  1.0
  O  O39  1  0.490  0.959  0.226  1.0
[/CIF]
.