The structure described by SmY3O6 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(11), one O(14), one O(17), one O(21), one O(4), and one O(7) atom to form SmO6 octahedra that share  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(3)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 Sm(4)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(4)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 56-58°. In the second Sm site, Sm(2) is bonded to one O(10), one O(15), one O(18), one O(19), one O(5), and one O(8) atom to form SmO6 octahedra that share  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(7)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 56-58°. In the third Sm site, Sm(3) is bonded to one O(1), one O(12), one O(16), one O(20), one O(23), and one O(6) atom to form SmO6 octahedra that share  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)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(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-58°. In the fourth Sm site, Sm(4) is bonded to one O(10), one O(16), one O(17), one O(21), one O(24), and one O(3) atom to form distorted SmO6 octahedra that share  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(3)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(9)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-58°. There are twelve inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(13), one O(2), one O(22), one O(24), one O(3), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Y(11)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,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra, and  an edgeedge with one Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the second Y site, Y(2) is bonded to one O(12), one O(15), 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 Sm(2)O6 octahedra,  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Sm(1)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(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-58°. In the third Y site, Y(3) is bonded to one O(10), 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 Sm(1)O6 octahedra,  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(2)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,  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 52-58°. In the fourth Y site, Y(4) is bonded to one O(1), one O(11), one O(16), one O(19), one O(22), and one O(7) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(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(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(12), one O(17), one O(18), one O(22), one O(6), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(4)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,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)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 53-57°. In the sixth Y site, Y(6) is bonded to one O(1), one O(10), one O(11), one O(2), one O(21), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(3)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 52-58°. In the seventh Y site, Y(7) is bonded to one O(1), one O(14), one O(19), one O(6), one O(8), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(3)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(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the eighth Y site, Y(8) is bonded to one O(11), one O(13), one O(18), one O(20), one O(23), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)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(9)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the ninth Y site, Y(9) 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 YO6 octahedra that share  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Sm(4)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,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)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 52-57°. In the tenth Y site, Y(10) 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 YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Sm(4)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, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. In the eleventh Y site, Y(11) is bonded to one O(12), one O(14), one O(17), one O(23), one O(3), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(2)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(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(5)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 53-58°. In the twelfth Y site, Y(12) is bonded to one O(15), one O(18), one O(20), one O(21), one O(24), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(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(7)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(5)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 52-58°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Sm(3), one Y(4), one Y(6), and one Y(7) atom to form distorted OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid, and  an edgeedge with one O(6)SmY3 trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(2), one Y(3), and one Y(6) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(4)SmY3 trigonal pyramid,  an edgeedge with one O(13)Y4 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the third O site, O(3) is bonded to one Sm(4), one Y(1), one Y(10), and one Y(11) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the fourth O site, O(4) is bonded to one Sm(1), one Y(2), one Y(3), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(7)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the fifth O site, O(5) is bonded to one Sm(2), one Y(11), one Y(6), and one Y(8) atom to form OSmY3 tetrahedra that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid, and  an edgeedge with one O(23)SmY3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Sm(3), one Y(3), one Y(5), and one Y(7) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the seventh O site, O(7) is bonded to one Sm(1), one Y(10), one Y(2), and one Y(4) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(4)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the eighth O site, O(8) is bonded to one Sm(2), one Y(10), one Y(3), and one Y(7) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the ninth O site, O(9) is bonded to one Y(1), one Y(12), one Y(5), and one Y(7) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the tenth O site, O(10) is bonded to one Sm(2), one Sm(4), one Y(3), and one Y(6) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Sm(1), one Y(4), one Y(6), and one Y(8) atom to form distorted OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid, and  an edgeedge with one O(7)SmY3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Sm(3), one Y(11), one Y(2), and one Y(5) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Y(1), one Y(10), one Y(3), and one Y(8) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Sm(1), one Y(11), one Y(7), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid, and  an edgeedge with one O(4)SmY3 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Sm(2), one Y(12), one Y(2), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid, and  an edgeedge with one O(4)SmY3 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Sm(3), one Sm(4), one Y(10), and one Y(4) atom to form OSm2Y2 tetrahedra that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid, and  an edgeedge with one O(7)SmY3 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Sm(1), one Sm(4), one Y(11), and one Y(5) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid, and  an edgeedge with one O(3)SmY3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Sm(2), one Y(12), one Y(5), and one Y(8) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Sm(2), one Y(4), one Y(7), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid, and  an edgeedge with one O(8)SmY3 trigonal pyramid. In the twentieth O site, O(20) is bonded to one Sm(3), one Y(10), one Y(12), and one Y(8) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the twenty-first O site, O(21) is bonded to one Sm(1), one Sm(4), one Y(12), and one Y(6) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(11)SmY3 trigonal pyramid, and  an edgeedge with one O(24)SmY3 trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Y(1), one Y(2), one Y(4), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(7)SmY3 trigonal pyramid,  an edgeedge with one O(2)Y4 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Sm(3), one Y(11), one Y(8), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid, and  an edgeedge with one O(20)SmY3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Sm(4), one Y(1), one Y(12), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. is represented by the CIF file [CIF]
data_SmY3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.249
_cell_length_b   9.262
_cell_length_c   9.262
_cell_angle_alpha   109.477
_cell_angle_beta   109.450
_cell_angle_gamma   109.453
_symmetry_Int_Tables_number   1
_cell_volume   611.057
_cell_formula_units_Z   4
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
  Sm  Sm0  1  1.000  0.999  0.499  1.0
  Sm  Sm1  1  1.000  0.502  0.000  1.0
  Sm  Sm2  1  0.500  0.500  0.502  1.0
  Sm  Sm3  1  0.252  0.219  0.970  1.0
  Y  Y4  1  0.501  0.999  1.000  1.0
  Y  Y5  1  0.748  0.782  0.031  1.0
  Y  Y6  1  0.469  0.753  0.219  1.0
  Y  Y7  1  0.029  0.250  0.282  1.0
  Y  Y8  1  0.717  0.968  0.751  1.0
  Y  Y9  1  0.219  0.471  0.750  1.0
  Y  Y10  1  0.250  0.719  0.470  1.0
  Y  Y11  1  0.750  0.281  0.530  1.0
  Y  Y12  1  0.782  0.531  0.250  1.0
  Y  Y13  1  0.282  0.031  0.250  1.0
  Y  Y14  1  0.969  0.749  0.718  1.0
  Y  Y15  1  0.533  0.248  0.782  1.0
  O  O16  1  0.267  0.513  0.542  1.0
  O  O17  1  0.469  0.731  0.957  1.0
  O  O18  1  0.230  0.953  0.969  1.0
  O  O19  1  0.725  0.755  0.267  1.0
  O  O20  1  0.010  0.541  0.766  1.0
  O  O21  1  0.512  0.745  0.470  1.0
  O  O22  1  0.029  0.987  0.254  1.0
  O  O23  1  0.233  0.776  0.246  1.0
  O  O24  1  0.457  0.968  0.730  1.0
  O  O25  1  0.245  0.476  0.013  1.0
  O  O26  1  0.958  0.232  0.488  1.0
  O  O27  1  0.745  0.732  0.776  1.0
  O  O28  1  0.543  0.032  0.270  1.0
  O  O29  1  0.042  0.768  0.511  1.0
  O  O30  1  0.754  0.530  0.987  1.0
  O  O31  1  0.256  0.268  0.231  1.0
  O  O32  1  0.966  0.008  0.740  1.0
  O  O33  1  0.769  0.225  0.756  1.0
  O  O34  1  0.989  0.458  0.232  1.0
  O  O35  1  0.489  0.255  0.530  1.0
  O  O36  1  0.276  0.246  0.729  1.0
  O  O37  1  0.770  0.043  0.032  1.0
  O  O38  1  0.731  0.488  0.457  1.0
  O  O39  1  0.536  0.268  0.043  1.0
[/CIF]
.
The structure described by SmY3O6 is Spinel-like structured and crystallizes in the triclinic P1 space group. There are four inequivalent Sm sites. In the first Sm site, Sm(1) is bonded to one O(11), one O(14), one O(17), one O(21), one O(4), and one O(7) atom to form SmO6 octahedra that share  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(3)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 Sm(4)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(4)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 56-58°. In the second Sm site, Sm(2) is bonded to one O(10), one O(15), one O(18), one O(19), one O(5), and one O(8) atom to form SmO6 octahedra that share  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Y(6)O6 octahedra,  an edgeedge with one Y(7)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 56-58°. In the third Sm site, Sm(3) is bonded to one O(1), one O(12), one O(16), one O(20), one O(23), and one O(6) atom to form SmO6 octahedra that share  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(3)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)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(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 56-58°. In the fourth Sm site, Sm(4) is bonded to one O(10), one O(16), one O(17), one O(21), one O(24), and one O(3) atom to form distorted SmO6 octahedra that share  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(3)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(9)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-58°. There are twelve inequivalent Y sites. In the first Y site, Y(1) is bonded to one O(13), one O(2), one O(22), one O(24), one O(3), and one O(9) atom to form YO6 octahedra that share  a cornercorner with one Y(11)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,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra,  an edgeedge with one Y(2)O6 octahedra,  an edgeedge with one Y(3)O6 octahedra, and  an edgeedge with one Y(5)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-56°. In the second Y site, Y(2) is bonded to one O(12), one O(15), 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 Sm(2)O6 octahedra,  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Sm(1)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(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 52-58°. In the third Y site, Y(3) is bonded to one O(10), 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 Sm(1)O6 octahedra,  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(2)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,  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 52-58°. In the fourth Y site, Y(4) is bonded to one O(1), one O(11), one O(16), one O(19), one O(22), and one O(7) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(4)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Y(8)O6 octahedra,  a cornercorner with one Y(9)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(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(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(12), one O(17), one O(18), one O(22), one O(6), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Sm(4)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,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)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 53-57°. In the sixth Y site, Y(6) is bonded to one O(1), one O(10), one O(11), one O(2), one O(21), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(3)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 52-58°. In the seventh Y site, Y(7) is bonded to one O(1), one O(14), one O(19), one O(6), one O(8), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Y(1)O6 octahedra,  a cornercorner with one Y(10)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(6)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(3)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(9)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the eighth Y site, Y(8) is bonded to one O(11), one O(13), one O(18), one O(20), one O(23), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)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(9)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Y(10)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)O6 octahedra, and  an edgeedge with one Y(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-57°. In the ninth Y site, Y(9) 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 YO6 octahedra that share  a cornercorner with one Sm(3)O6 octahedra,  a cornercorner with one Sm(4)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,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Y(11)O6 octahedra,  an edgeedge with one Y(12)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 52-57°. In the tenth Y site, Y(10) 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 YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(2)O6 octahedra,  a cornercorner with one Y(11)O6 octahedra,  a cornercorner with one Y(12)O6 octahedra,  a cornercorner with one Y(2)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Sm(4)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, and  an edgeedge with one Y(8)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-58°. In the eleventh Y site, Y(11) is bonded to one O(12), one O(14), one O(17), one O(23), one O(3), and one O(5) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(2)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(6)O6 octahedra,  a cornercorner with one Y(7)O6 octahedra,  an edgeedge with one Sm(1)O6 octahedra,  an edgeedge with one Sm(3)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(5)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 53-58°. In the twelfth Y site, Y(12) is bonded to one O(15), one O(18), one O(20), one O(21), one O(24), and one O(9) atom to form distorted YO6 octahedra that share  a cornercorner with one Sm(1)O6 octahedra,  a cornercorner with one Sm(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(7)O6 octahedra,  an edgeedge with one Sm(2)O6 octahedra,  an edgeedge with one Sm(4)O6 octahedra,  an edgeedge with one Y(1)O6 octahedra,  an edgeedge with one Y(5)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 52-58°. There are twenty-four inequivalent O sites. In the first O site, O(1) is bonded to one Sm(3), one Y(4), one Y(6), and one Y(7) atom to form distorted OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid, and  an edgeedge with one O(6)SmY3 trigonal pyramid. In the second O site, O(2) is bonded to one Y(1), one Y(2), one Y(3), and one Y(6) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(4)SmY3 trigonal pyramid,  an edgeedge with one O(13)Y4 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the third O site, O(3) is bonded to one Sm(4), one Y(1), one Y(10), and one Y(11) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the fourth O site, O(4) is bonded to one Sm(1), one Y(2), one Y(3), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(7)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the fifth O site, O(5) is bonded to one Sm(2), one Y(11), one Y(6), and one Y(8) atom to form OSmY3 tetrahedra that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid, and  an edgeedge with one O(23)SmY3 trigonal pyramid. In the sixth O site, O(6) is bonded to one Sm(3), one Y(3), one Y(5), and one Y(7) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the seventh O site, O(7) is bonded to one Sm(1), one Y(10), one Y(2), and one Y(4) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(11)SmY3 trigonal pyramid,  an edgeedge with one O(4)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the eighth O site, O(8) is bonded to one Sm(2), one Y(10), one Y(3), and one Y(7) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the ninth O site, O(9) is bonded to one Y(1), one Y(12), one Y(5), and one Y(7) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the tenth O site, O(10) is bonded to one Sm(2), one Sm(4), one Y(3), and one Y(6) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the eleventh O site, O(11) is bonded to one Sm(1), one Y(4), one Y(6), and one Y(8) atom to form distorted OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid, and  an edgeedge with one O(7)SmY3 trigonal pyramid. In the twelfth O site, O(12) is bonded to one Sm(3), one Y(11), one Y(2), and one Y(5) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid,  an edgeedge with one O(6)SmY3 trigonal pyramid, and  an edgeedge with one O(22)Y4 trigonal pyramid. In the thirteenth O site, O(13) is bonded to one Y(1), one Y(10), one Y(3), and one Y(8) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid,  an edgeedge with one O(8)SmY3 trigonal pyramid, and  an edgeedge with one O(2)Y4 trigonal pyramid. In the fourteenth O site, O(14) is bonded to one Sm(1), one Y(11), one Y(7), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid, and  an edgeedge with one O(4)SmY3 trigonal pyramid. In the fifteenth O site, O(15) is bonded to one Sm(2), one Y(12), one Y(2), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(19)SmY3 trigonal pyramid,  an edgeedge with one O(24)SmY3 trigonal pyramid, and  an edgeedge with one O(4)SmY3 trigonal pyramid. In the sixteenth O site, O(16) is bonded to one Sm(3), one Sm(4), one Y(10), and one Y(4) atom to form OSm2Y2 tetrahedra that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid, and  an edgeedge with one O(7)SmY3 trigonal pyramid. In the seventeenth O site, O(17) is bonded to one Sm(1), one Sm(4), one Y(11), and one Y(5) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid, and  an edgeedge with one O(3)SmY3 trigonal pyramid. In the eighteenth O site, O(18) is bonded to one Sm(2), one Y(12), one Y(5), and one Y(8) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(20)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the nineteenth O site, O(19) is bonded to one Sm(2), one Y(4), one Y(7), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(1)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid, and  an edgeedge with one O(8)SmY3 trigonal pyramid. In the twentieth O site, O(20) is bonded to one Sm(3), one Y(10), one Y(12), and one Y(8) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(21)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(12)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(8)SmY3 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(16)Sm2Y2 tetrahedra,  an edgeedge with one O(18)SmY3 trigonal pyramid,  an edgeedge with one O(23)SmY3 trigonal pyramid, and  an edgeedge with one O(13)Y4 trigonal pyramid. In the twenty-first O site, O(21) is bonded to one Sm(1), one Sm(4), one Y(12), and one Y(6) atom to form OSm2Y2 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(5)SmY3 tetrahedra,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(7)SmY3 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(9)Y4 trigonal pyramid,  an edgeedge with one O(10)Sm2Y2 trigonal pyramid,  an edgeedge with one O(17)Sm2Y2 trigonal pyramid,  an edgeedge with one O(11)SmY3 trigonal pyramid, and  an edgeedge with one O(24)SmY3 trigonal pyramid. In the twenty-second O site, O(22) is bonded to one Y(1), one Y(2), one Y(4), and one Y(5) atom to form OY4 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(7)SmY3 trigonal pyramid,  an edgeedge with one O(2)Y4 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. In the twenty-third O site, O(23) is bonded to one Sm(3), one Y(11), one Y(8), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(1)SmY3 trigonal pyramid,  a cornercorner with one O(11)SmY3 trigonal pyramid,  a cornercorner with one O(15)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(24)SmY3 trigonal pyramid,  a cornercorner with one O(3)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(6)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  an edgeedge with one O(5)SmY3 tetrahedra,  an edgeedge with one O(12)SmY3 trigonal pyramid,  an edgeedge with one O(14)SmY3 trigonal pyramid, and  an edgeedge with one O(20)SmY3 trigonal pyramid. In the twenty-fourth O site, O(24) is bonded to one Sm(4), one Y(1), one Y(12), and one Y(9) atom to form OSmY3 trigonal pyramids that share  a cornercorner with one O(16)Sm2Y2 tetrahedra,  a cornercorner with one O(10)Sm2Y2 trigonal pyramid,  a cornercorner with one O(17)Sm2Y2 trigonal pyramid,  a cornercorner with one O(14)SmY3 trigonal pyramid,  a cornercorner with one O(18)SmY3 trigonal pyramid,  a cornercorner with one O(19)SmY3 trigonal pyramid,  a cornercorner with one O(20)SmY3 trigonal pyramid,  a cornercorner with one O(23)SmY3 trigonal pyramid,  a cornercorner with one O(4)SmY3 trigonal pyramid,  a cornercorner with one O(13)Y4 trigonal pyramid,  a cornercorner with one O(2)Y4 trigonal pyramid,  a cornercorner with one O(22)Y4 trigonal pyramid,  an edgeedge with one O(21)Sm2Y2 trigonal pyramid,  an edgeedge with one O(15)SmY3 trigonal pyramid,  an edgeedge with one O(3)SmY3 trigonal pyramid, and  an edgeedge with one O(9)Y4 trigonal pyramid. is represented by the CIF file [CIF]
data_SmY3O6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.249
_cell_length_b   9.262
_cell_length_c   9.262
_cell_angle_alpha   109.477
_cell_angle_beta   109.450
_cell_angle_gamma   109.453
_symmetry_Int_Tables_number   1
_cell_volume   611.057
_cell_formula_units_Z   4
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
  Sm  Sm0  1  1.000  0.999  0.499  1.0
  Sm  Sm1  1  1.000  0.502  0.000  1.0
  Sm  Sm2  1  0.500  0.500  0.502  1.0
  Sm  Sm3  1  0.252  0.219  0.970  1.0
  Y  Y4  1  0.501  0.999  1.000  1.0
  Y  Y5  1  0.748  0.782  0.031  1.0
  Y  Y6  1  0.469  0.753  0.219  1.0
  Y  Y7  1  0.029  0.250  0.282  1.0
  Y  Y8  1  0.717  0.968  0.751  1.0
  Y  Y9  1  0.219  0.471  0.750  1.0
  Y  Y10  1  0.250  0.719  0.470  1.0
  Y  Y11  1  0.750  0.281  0.530  1.0
  Y  Y12  1  0.782  0.531  0.250  1.0
  Y  Y13  1  0.282  0.031  0.250  1.0
  Y  Y14  1  0.969  0.749  0.718  1.0
  Y  Y15  1  0.533  0.248  0.782  1.0
  O  O16  1  0.267  0.513  0.542  1.0
  O  O17  1  0.469  0.731  0.957  1.0
  O  O18  1  0.230  0.953  0.969  1.0
  O  O19  1  0.725  0.755  0.267  1.0
  O  O20  1  0.010  0.541  0.766  1.0
  O  O21  1  0.512  0.745  0.470  1.0
  O  O22  1  0.029  0.987  0.254  1.0
  O  O23  1  0.233  0.776  0.246  1.0
  O  O24  1  0.457  0.968  0.730  1.0
  O  O25  1  0.245  0.476  0.013  1.0
  O  O26  1  0.958  0.232  0.488  1.0
  O  O27  1  0.745  0.732  0.776  1.0
  O  O28  1  0.543  0.032  0.270  1.0
  O  O29  1  0.042  0.768  0.511  1.0
  O  O30  1  0.754  0.530  0.987  1.0
  O  O31  1  0.256  0.268  0.231  1.0
  O  O32  1  0.966  0.008  0.740  1.0
  O  O33  1  0.769  0.225  0.756  1.0
  O  O34  1  0.989  0.458  0.232  1.0
  O  O35  1  0.489  0.255  0.530  1.0
  O  O36  1  0.276  0.246  0.729  1.0
  O  O37  1  0.770  0.043  0.032  1.0
  O  O38  1  0.731  0.488  0.457  1.0
  O  O39  1  0.536  0.268  0.043  1.0
[/CIF]
.