The material structure described by MgY14(ReO14)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded to one O(1), one O(12), and two equivalent O(6) atoms to form MgO4 tetrahedra that share  an edgeedge with one Y(3)O6 octahedra and edges with two equivalent Y(4)O7 pentagonal bipyramids. There are ten inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted body-centered cubic geometry to one O(17), one O(18), one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(11), one O(12), one O(20), two equivalent O(14), and two equivalent O(2) atoms. In the third Y site, Y(3) is bonded to one O(10), one O(13), two equivalent O(6), and two equivalent O(7) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, edges with two equivalent Y(4)O7 pentagonal bipyramids, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-55°. In the fourth Y site, Y(4) is bonded to one O(1), one O(13), one O(14), one O(16), one O(17), one O(6), and one O(8) atom to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Re(2)O6 octahedra,  a cornercorner with one Y(4)O7 pentagonal bipyramid,  an edgeedge with one Y(10)O8 hexagonal bipyramid,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Re(1)O6 octahedra,  an edgeedge with one Y(4)O7 pentagonal bipyramid, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the fifth Y site, Y(5) is bonded to one O(19), one O(4), two equivalent O(14), and two equivalent O(2) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(2)O6 octahedra and corners with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 51-52°. In the sixth Y site, Y(6) is bonded in a 7-coordinate geometry to one O(11), one O(15), one O(2), one O(3), one O(4), one O(7), and one O(9) atom. In the seventh Y site, Y(7) is bonded in a 7-coordinate geometry to one O(10), one O(15), one O(2), one O(20), one O(5), one O(7), and one O(9) atom. In the eighth Y site, Y(8) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(12), one O(20), and two equivalent O(15) atoms. In the ninth Y site, Y(9) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(16), one O(18), one O(19), one O(6), and one O(8) atom. In the tenth Y site, Y(10) is bonded to one O(17), one O(18), one O(3), one O(5), two equivalent O(8), and two equivalent O(9) atoms to form distorted YO8 hexagonal bipyramids that share edges with two equivalent Re(1)O6 octahedra and edges with two equivalent Y(4)O7 pentagonal bipyramids. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(10), one O(13), two equivalent O(8), and two equivalent O(9) atoms to form ReO6 octahedra that share corners with two equivalent Y(3)O6 octahedra, edges with two equivalent Y(10)O8 hexagonal bipyramids, and edges with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-55°. In the second Re site, Re(2) is bonded to one O(19), one O(4), two equivalent O(15), and two equivalent O(16) atoms to form ReO6 octahedra that share corners with two equivalent Y(5)O6 octahedra and corners with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 51-52°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Mg(1), one Y(2), one Y(8), and two equivalent Y(4) atoms. In the second O site, O(2) is bonded to one Y(2), one Y(5), one Y(6), and one Y(7) atom to form OY4 tetrahedra that share  a cornercorner with one O(10)Y3Re tetrahedra,  a cornercorner with one O(19)Y3Re tetrahedra,  a cornercorner with one O(3)Y4 tetrahedra,  a cornercorner with one O(5)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(4)Y3Re tetrahedra,  an edgeedge with one O(11)Y4 tetrahedra,  an edgeedge with one O(14)Y4 tetrahedra, and  an edgeedge with one O(20)Y4 tetrahedra. In the third O site, O(3) is bonded to one Y(1), one Y(10), and two equivalent Y(6) atoms to form OY4 tetrahedra that share corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(18)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(4)Y3Re tetrahedra,  an edgeedge with one O(17)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the fourth O site, O(4) is bonded to one Y(5), two equivalent Y(6), and one Re(2) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(19)Y3Re tetrahedra, corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(3)Y4 tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. In the fifth O site, O(5) is bonded to one Y(1), one Y(10), and two equivalent Y(7) atoms to form OY4 tetrahedra that share corners with two equivalent O(10)Y3Re tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(20)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra,  an edgeedge with one O(18)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Mg(1), one Y(1), one Y(3), one Y(4), and one Y(9) atom. In the seventh O site, O(7) is bonded to one Y(1), one Y(3), one Y(6), and one Y(7) atom to form OY4 tetrahedra that share  a cornercorner with one O(13)Y3Re tetrahedra,  a cornercorner with one O(4)Y3Re tetrahedra,  a cornercorner with one O(11)Y4 tetrahedra,  a cornercorner with one O(17)Y4 tetrahedra,  a cornercorner with one O(18)Y4 tetrahedra,  a cornercorner with one O(20)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(10)Y3Re tetrahedra,  an edgeedge with one O(3)Y4 tetrahedra, and  an edgeedge with one O(5)Y4 tetrahedra. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Y(10), one Y(4), one Y(9), and one Re(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Y(10), one Y(6), one Y(7), and one Re(1) atom. In the tenth O site, O(10) is bonded to one Y(3), two equivalent Y(7), and one Re(1) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(13)Y3Re tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(20)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the eleventh O site, O(11) is bonded to one Y(2), one Y(8), and two equivalent Y(6) atoms to form OY4 tetrahedra that share corners with two equivalent O(4)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(20)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to one Mg(1), one Y(2), one Y(8), and two equivalent Y(9) atoms. In the thirteenth O site, O(13) is bonded to one Y(3), two equivalent Y(4), and one Re(1) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(10)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, and corners with two equivalent O(7)Y4 tetrahedra. In the fourteenth O site, O(14) is bonded to one Y(2), one Y(4), one Y(5), and one Y(9) atom to form OY4 tetrahedra that share  a cornercorner with one O(13)Y3Re tetrahedra,  a cornercorner with one O(4)Y3Re tetrahedra,  a cornercorner with one O(11)Y4 tetrahedra,  a cornercorner with one O(17)Y4 tetrahedra,  a cornercorner with one O(18)Y4 tetrahedra,  a cornercorner with one O(20)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra,  an edgeedge with one O(19)Y3Re tetrahedra, and  an edgeedge with one O(2)Y4 tetrahedra. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Y(6), one Y(7), one Y(8), and one Re(2) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Y(4), one Y(9), and one Re(2) atom. In the seventeenth O site, O(17) is bonded to one Y(1), one Y(10), and two equivalent Y(4) atoms to form OY4 tetrahedra that share corners with two equivalent O(13)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(18)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra, and  an edgeedge with one O(3)Y4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Y(1), one Y(10), and two equivalent Y(9) atoms to form OY4 tetrahedra that share corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(19)Y3Re tetrahedra, and  an edgeedge with one O(5)Y4 tetrahedra. In the nineteenth O site, O(19) is bonded to one Y(5), two equivalent Y(9), and one Re(2) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(4)Y3Re tetrahedra, corners with two equivalent O(2)Y4 tetrahedra,  an edgeedge with one O(18)Y4 tetrahedra, and edges with two equivalent O(14)Y4 tetrahedra. In the twentieth O site, O(20) is bonded to one Y(2), one Y(8), and two equivalent Y(7) atoms to form OY4 tetrahedra that share corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(10)Y3Re tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. is represented by the CIF file [CIF]
data_Y14Mg(ReO14)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.627
_cell_length_b   15.220
_cell_length_c   13.160
_cell_angle_alpha   30.229
_cell_angle_beta   54.580
_cell_angle_gamma   59.926
_symmetry_Int_Tables_number   1
_cell_volume   626.732
_cell_formula_units_Z   1
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
  Y  Y0  1  0.013  0.001  0.986  1.0
  Y  Y1  1  0.985  0.493  0.022  1.0
  Y  Y2  1  0.516  0.006  0.978  1.0
  Y  Y3  1  0.509  0.281  0.950  1.0
  Y  Y4  1  0.495  0.503  0.002  1.0
  Y  Y5  1  0.493  0.241  0.493  1.0
  Y  Y6  1  0.029  0.281  0.950  1.0
  Y  Y7  1  0.500  0.738  0.027  1.0
  Y  Y8  1  0.974  0.988  0.539  1.0
  Y  Y9  1  0.515  0.744  0.519  1.0
  Y  Y10  1  0.971  0.738  0.027  1.0
  Y  Y11  1  0.039  0.241  0.493  1.0
  Y  Y12  1  0.005  0.500  0.494  1.0
  Y  Y13  1  0.958  0.744  0.519  1.0
  Mg  Mg14  1  0.245  0.999  0.257  1.0
  Re  Re15  1  0.503  0.499  0.498  1.0
  Re  Re16  1  0.505  0.006  0.489  1.0
  O  O17  1  0.147  0.210  0.143  1.0
  O  O18  1  0.136  0.509  0.127  1.0
  O  O19  1  0.137  0.267  0.596  1.0
  O  O20  1  0.414  0.229  0.357  1.0
  O  O21  1  0.138  0.726  0.136  1.0
  O  O22  1  0.593  0.509  0.127  1.0
  O  O23  1  0.156  0.983  0.162  1.0
  O  O24  1  0.389  0.010  0.859  1.0
  O  O25  1  0.193  0.549  0.567  1.0
  O  O26  1  0.427  0.446  0.440  1.0
  O  O27  1  0.586  0.730  0.185  1.0
  O  O28  1  0.863  0.234  0.403  1.0
  O  O29  1  0.139  0.796  0.565  1.0
  O  O30  1  0.418  0.273  0.809  1.0
  O  O31  1  0.801  0.446  0.440  1.0
  O  O32  1  0.575  0.549  0.567  1.0
  O  O33  1  0.554  0.983  0.162  1.0
  O  O34  1  0.872  0.010  0.859  1.0
  O  O35  1  0.392  0.488  0.883  1.0
  O  O36  1  0.193  0.948  0.663  1.0
  O  O37  1  0.441  0.066  0.317  1.0
  O  O38  1  0.870  0.268  0.863  1.0
  O  O39  1  0.870  0.746  0.384  1.0
  O  O40  1  0.586  0.771  0.643  1.0
  O  O41  1  0.794  0.066  0.317  1.0
  O  O42  1  0.584  0.948  0.663  1.0
  O  O43  1  0.864  0.488  0.883  1.0
  O  O44  1  0.863  0.748  0.889  1.0
[/CIF]
.
The material structure described by MgY14(ReO14)2 crystallizes in the monoclinic Pm space group. Mg(1) is bonded to one O(1), one O(12), and two equivalent O(6) atoms to form MgO4 tetrahedra that share  an edgeedge with one Y(3)O6 octahedra and edges with two equivalent Y(4)O7 pentagonal bipyramids. There are ten inequivalent Y sites. In the first Y site, Y(1) is bonded in a distorted body-centered cubic geometry to one O(17), one O(18), one O(3), one O(5), two equivalent O(6), and two equivalent O(7) atoms. In the second Y site, Y(2) is bonded in a body-centered cubic geometry to one O(1), one O(11), one O(12), one O(20), two equivalent O(14), and two equivalent O(2) atoms. In the third Y site, Y(3) is bonded to one O(10), one O(13), two equivalent O(6), and two equivalent O(7) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(1)O6 octahedra, edges with two equivalent Y(4)O7 pentagonal bipyramids, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 46-55°. In the fourth Y site, Y(4) is bonded to one O(1), one O(13), one O(14), one O(16), one O(17), one O(6), and one O(8) atom to form distorted YO7 pentagonal bipyramids that share  a cornercorner with one Y(5)O6 octahedra,  a cornercorner with one Re(2)O6 octahedra,  a cornercorner with one Y(4)O7 pentagonal bipyramid,  an edgeedge with one Y(10)O8 hexagonal bipyramid,  an edgeedge with one Y(3)O6 octahedra,  an edgeedge with one Re(1)O6 octahedra,  an edgeedge with one Y(4)O7 pentagonal bipyramid, and  an edgeedge with one Mg(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 37-59°. In the fifth Y site, Y(5) is bonded to one O(19), one O(4), two equivalent O(14), and two equivalent O(2) atoms to form distorted YO6 octahedra that share corners with two equivalent Re(2)O6 octahedra and corners with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 51-52°. In the sixth Y site, Y(6) is bonded in a 7-coordinate geometry to one O(11), one O(15), one O(2), one O(3), one O(4), one O(7), and one O(9) atom. In the seventh Y site, Y(7) is bonded in a 7-coordinate geometry to one O(10), one O(15), one O(2), one O(20), one O(5), one O(7), and one O(9) atom. In the eighth Y site, Y(8) is bonded in a 6-coordinate geometry to one O(1), one O(11), one O(12), one O(20), and two equivalent O(15) atoms. In the ninth Y site, Y(9) is bonded in a 7-coordinate geometry to one O(12), one O(14), one O(16), one O(18), one O(19), one O(6), and one O(8) atom. In the tenth Y site, Y(10) is bonded to one O(17), one O(18), one O(3), one O(5), two equivalent O(8), and two equivalent O(9) atoms to form distorted YO8 hexagonal bipyramids that share edges with two equivalent Re(1)O6 octahedra and edges with two equivalent Y(4)O7 pentagonal bipyramids. There are two inequivalent Re sites. In the first Re site, Re(1) is bonded to one O(10), one O(13), two equivalent O(8), and two equivalent O(9) atoms to form ReO6 octahedra that share corners with two equivalent Y(3)O6 octahedra, edges with two equivalent Y(10)O8 hexagonal bipyramids, and edges with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 46-55°. In the second Re site, Re(2) is bonded to one O(19), one O(4), two equivalent O(15), and two equivalent O(16) atoms to form ReO6 octahedra that share corners with two equivalent Y(5)O6 octahedra and corners with two equivalent Y(4)O7 pentagonal bipyramids. The corner-sharing octahedral tilt angles range from 51-52°. There are twenty inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to one Mg(1), one Y(2), one Y(8), and two equivalent Y(4) atoms. In the second O site, O(2) is bonded to one Y(2), one Y(5), one Y(6), and one Y(7) atom to form OY4 tetrahedra that share  a cornercorner with one O(10)Y3Re tetrahedra,  a cornercorner with one O(19)Y3Re tetrahedra,  a cornercorner with one O(3)Y4 tetrahedra,  a cornercorner with one O(5)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(4)Y3Re tetrahedra,  an edgeedge with one O(11)Y4 tetrahedra,  an edgeedge with one O(14)Y4 tetrahedra, and  an edgeedge with one O(20)Y4 tetrahedra. In the third O site, O(3) is bonded to one Y(1), one Y(10), and two equivalent Y(6) atoms to form OY4 tetrahedra that share corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(18)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(4)Y3Re tetrahedra,  an edgeedge with one O(17)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the fourth O site, O(4) is bonded to one Y(5), two equivalent Y(6), and one Re(2) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(19)Y3Re tetrahedra, corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(3)Y4 tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. In the fifth O site, O(5) is bonded to one Y(1), one Y(10), and two equivalent Y(7) atoms to form OY4 tetrahedra that share corners with two equivalent O(10)Y3Re tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(20)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra,  an edgeedge with one O(18)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the sixth O site, O(6) is bonded in a 5-coordinate geometry to one Mg(1), one Y(1), one Y(3), one Y(4), and one Y(9) atom. In the seventh O site, O(7) is bonded to one Y(1), one Y(3), one Y(6), and one Y(7) atom to form OY4 tetrahedra that share  a cornercorner with one O(13)Y3Re tetrahedra,  a cornercorner with one O(4)Y3Re tetrahedra,  a cornercorner with one O(11)Y4 tetrahedra,  a cornercorner with one O(17)Y4 tetrahedra,  a cornercorner with one O(18)Y4 tetrahedra,  a cornercorner with one O(20)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(10)Y3Re tetrahedra,  an edgeedge with one O(3)Y4 tetrahedra, and  an edgeedge with one O(5)Y4 tetrahedra. In the eighth O site, O(8) is bonded in a 4-coordinate geometry to one Y(10), one Y(4), one Y(9), and one Re(1) atom. In the ninth O site, O(9) is bonded in a 4-coordinate geometry to one Y(10), one Y(6), one Y(7), and one Re(1) atom. In the tenth O site, O(10) is bonded to one Y(3), two equivalent Y(7), and one Re(1) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(13)Y3Re tetrahedra, corners with two equivalent O(2)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra,  an edgeedge with one O(20)Y4 tetrahedra, and edges with two equivalent O(7)Y4 tetrahedra. In the eleventh O site, O(11) is bonded to one Y(2), one Y(8), and two equivalent Y(6) atoms to form OY4 tetrahedra that share corners with two equivalent O(4)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(20)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. In the twelfth O site, O(12) is bonded in a 5-coordinate geometry to one Mg(1), one Y(2), one Y(8), and two equivalent Y(9) atoms. In the thirteenth O site, O(13) is bonded to one Y(3), two equivalent Y(4), and one Re(1) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(10)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, and corners with two equivalent O(7)Y4 tetrahedra. In the fourteenth O site, O(14) is bonded to one Y(2), one Y(4), one Y(5), and one Y(9) atom to form OY4 tetrahedra that share  a cornercorner with one O(13)Y3Re tetrahedra,  a cornercorner with one O(4)Y3Re tetrahedra,  a cornercorner with one O(11)Y4 tetrahedra,  a cornercorner with one O(17)Y4 tetrahedra,  a cornercorner with one O(18)Y4 tetrahedra,  a cornercorner with one O(20)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(2)Y4 tetrahedra,  an edgeedge with one O(19)Y3Re tetrahedra, and  an edgeedge with one O(2)Y4 tetrahedra. In the fifteenth O site, O(15) is bonded in a distorted rectangular see-saw-like geometry to one Y(6), one Y(7), one Y(8), and one Re(2) atom. In the sixteenth O site, O(16) is bonded in a 2-coordinate geometry to one Y(4), one Y(9), and one Re(2) atom. In the seventeenth O site, O(17) is bonded to one Y(1), one Y(10), and two equivalent Y(4) atoms to form OY4 tetrahedra that share corners with two equivalent O(13)Y3Re tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(18)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra, and  an edgeedge with one O(3)Y4 tetrahedra. In the eighteenth O site, O(18) is bonded to one Y(1), one Y(10), and two equivalent Y(9) atoms to form OY4 tetrahedra that share corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(17)Y4 tetrahedra, corners with two equivalent O(3)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(19)Y3Re tetrahedra, and  an edgeedge with one O(5)Y4 tetrahedra. In the nineteenth O site, O(19) is bonded to one Y(5), two equivalent Y(9), and one Re(2) atom to form distorted OY3Re tetrahedra that share corners with two equivalent O(4)Y3Re tetrahedra, corners with two equivalent O(2)Y4 tetrahedra,  an edgeedge with one O(18)Y4 tetrahedra, and edges with two equivalent O(14)Y4 tetrahedra. In the twentieth O site, O(20) is bonded to one Y(2), one Y(8), and two equivalent Y(7) atoms to form OY4 tetrahedra that share corners with two equivalent O(11)Y4 tetrahedra, corners with two equivalent O(14)Y4 tetrahedra, corners with two equivalent O(5)Y4 tetrahedra, corners with two equivalent O(7)Y4 tetrahedra,  an edgeedge with one O(10)Y3Re tetrahedra, and edges with two equivalent O(2)Y4 tetrahedra. is represented by the CIF file [CIF]
data_Y14Mg(ReO14)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.627
_cell_length_b   15.220
_cell_length_c   13.160
_cell_angle_alpha   30.229
_cell_angle_beta   54.580
_cell_angle_gamma   59.926
_symmetry_Int_Tables_number   1
_cell_volume   626.732
_cell_formula_units_Z   1
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
  Y  Y0  1  0.013  0.001  0.986  1.0
  Y  Y1  1  0.985  0.493  0.022  1.0
  Y  Y2  1  0.516  0.006  0.978  1.0
  Y  Y3  1  0.509  0.281  0.950  1.0
  Y  Y4  1  0.495  0.503  0.002  1.0
  Y  Y5  1  0.493  0.241  0.493  1.0
  Y  Y6  1  0.029  0.281  0.950  1.0
  Y  Y7  1  0.500  0.738  0.027  1.0
  Y  Y8  1  0.974  0.988  0.539  1.0
  Y  Y9  1  0.515  0.744  0.519  1.0
  Y  Y10  1  0.971  0.738  0.027  1.0
  Y  Y11  1  0.039  0.241  0.493  1.0
  Y  Y12  1  0.005  0.500  0.494  1.0
  Y  Y13  1  0.958  0.744  0.519  1.0
  Mg  Mg14  1  0.245  0.999  0.257  1.0
  Re  Re15  1  0.503  0.499  0.498  1.0
  Re  Re16  1  0.505  0.006  0.489  1.0
  O  O17  1  0.147  0.210  0.143  1.0
  O  O18  1  0.136  0.509  0.127  1.0
  O  O19  1  0.137  0.267  0.596  1.0
  O  O20  1  0.414  0.229  0.357  1.0
  O  O21  1  0.138  0.726  0.136  1.0
  O  O22  1  0.593  0.509  0.127  1.0
  O  O23  1  0.156  0.983  0.162  1.0
  O  O24  1  0.389  0.010  0.859  1.0
  O  O25  1  0.193  0.549  0.567  1.0
  O  O26  1  0.427  0.446  0.440  1.0
  O  O27  1  0.586  0.730  0.185  1.0
  O  O28  1  0.863  0.234  0.403  1.0
  O  O29  1  0.139  0.796  0.565  1.0
  O  O30  1  0.418  0.273  0.809  1.0
  O  O31  1  0.801  0.446  0.440  1.0
  O  O32  1  0.575  0.549  0.567  1.0
  O  O33  1  0.554  0.983  0.162  1.0
  O  O34  1  0.872  0.010  0.859  1.0
  O  O35  1  0.392  0.488  0.883  1.0
  O  O36  1  0.193  0.948  0.663  1.0
  O  O37  1  0.441  0.066  0.317  1.0
  O  O38  1  0.870  0.268  0.863  1.0
  O  O39  1  0.870  0.746  0.384  1.0
  O  O40  1  0.586  0.771  0.643  1.0
  O  O41  1  0.794  0.066  0.317  1.0
  O  O42  1  0.584  0.948  0.663  1.0
  O  O43  1  0.864  0.488  0.883  1.0
  O  O44  1  0.863  0.748  0.889  1.0
[/CIF]
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