The compound described by MgV8Zn4O16 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(11), two equivalent O(1), and two equivalent O(12) atoms to form MgO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(3)O6 octahedra, edges with two equivalent V(7)O6 octahedra, and edges with two equivalent Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. There are eight inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(16), two equivalent O(11), and two equivalent O(9) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(6)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, edges with two equivalent Zn(2)O6 pentagonal pyramids, and  an edgeedge with one Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. In the second V site, V(2) is bonded to one O(4), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form VO6 octahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent Zn(2)O6 pentagonal pyramids,  a cornercorner with one Zn(1)O4 tetrahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-54°. In the third V site, V(3) is bonded to one O(1), one O(8), two equivalent O(10), and two equivalent O(2) atoms to form VO6 octahedra that share corners with two equivalent V(7)O6 octahedra, corners with two equivalent Zn(2)O6 pentagonal pyramids,  an edgeedge with one V(7)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. In the fourth V site, V(4) is bonded to one O(5), one O(6), two equivalent O(15), and two equivalent O(9) atoms to form VO6 octahedra that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  a cornercorner with one Zn(1)O4 tetrahedra,  an edgeedge with one V(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra, edges with two equivalent Zn(2)O6 pentagonal pyramids, and edges with two equivalent V(8)O5 square pyramids. The corner-sharing octahedral tilt angles range from 11-54°. In the fifth V site, V(5) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(14), and two equivalent O(16) atoms. In the sixth V site, V(6) is bonded to one O(13), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra,  a cornercorner with one Zn(2)O6 pentagonal pyramid, corners with two equivalent Zn(1)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-55°. In the seventh V site, V(7) is bonded to one O(12), one O(7), two equivalent O(10), and two equivalent O(4) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra,  a cornercorner with one Zn(3)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. In the eighth V site, V(8) is bonded to one O(15), two equivalent O(14), and two equivalent O(5) atoms to form VO5 square pyramids that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent V(8)O5 square pyramids. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(5), and two equivalent O(13) atoms to form distorted ZnO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(7)O6 octahedra, corners with two equivalent V(8)O5 square pyramids, and corners with two equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-89°. In the second Zn site, Zn(2) is bonded to one O(2), one O(9), two equivalent O(16), and two equivalent O(6) atoms to form distorted ZnO6 pentagonal pyramids that share  a cornercorner with one V(6)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent V(3)O6 octahedra, edges with two equivalent V(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent Zn(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 41-74°. In the third Zn site, Zn(3) is bonded to one O(12), one O(14), and two equivalent O(11) atoms to form distorted ZnO4 tetrahedra that share  a cornercorner with one V(7)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(8)O5 square pyramids, corners with two equivalent Zn(3)O4 tetrahedra,  an edgeedge with one V(1)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-29°. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to one O(15), one O(7), and two equivalent O(8) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one V(3), and two equivalent V(6) atoms to form OMg2V3 square pyramids that share  a cornercorner with one O(8)V2Zn2 tetrahedra, edges with two equivalent O(1)Mg2V3 square pyramids, edges with two equivalent O(10)MgV4 square pyramids, and edges with two equivalent O(2)V3Zn tetrahedra. In the second O site, O(2) is bonded to one V(6), two equivalent V(3), and one Zn(2) atom to form distorted OV3Zn tetrahedra that share  a cornercorner with one O(9)V4Zn square pyramid, corners with two equivalent O(10)MgV4 square pyramids, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra,  an edgeedge with one O(10)MgV4 square pyramid, and edges with two equivalent O(1)Mg2V3 square pyramids. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent V(2) and two equivalent V(6) atoms. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(2), two equivalent V(7), and one Zn(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one V(4), two equivalent V(8), and one Zn(1) atom. In the sixth O site, O(6) is bonded to one V(2), one V(4), and two equivalent Zn(2) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, corners with two equivalent O(7)V3Zn tetrahedra, and edges with two equivalent O(9)V4Zn square pyramids. In the seventh O site, O(7) is bonded to one V(7), two equivalent V(2), and one Zn(4) atom to form OV3Zn tetrahedra that share corners with two equivalent O(10)MgV4 square pyramids,  a cornercorner with one O(15)V3Zn tetrahedra, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, and corners with two equivalent O(7)V3Zn tetrahedra. In the eighth O site, O(8) is bonded to one V(3), one V(5), and two equivalent Zn(4) atoms to form OV2Zn2 tetrahedra that share  a cornercorner with one O(1)Mg2V3 square pyramid, corners with two equivalent O(10)MgV4 square pyramids, corners with two equivalent O(14)V4Zn square pyramids, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, and corners with two equivalent O(7)V3Zn tetrahedra. In the ninth O site, O(9) is bonded to two equivalent V(1), two equivalent V(4), and one Zn(2) atom to form OV4Zn square pyramids that share  a cornercorner with one O(2)V3Zn tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, edges with two equivalent O(9)V4Zn square pyramids,  an edgeedge with one O(15)V3Zn tetrahedra, and edges with two equivalent O(6)V2Zn2 tetrahedra. In the tenth O site, O(10) is bonded to one Mg(1), two equivalent V(3), and two equivalent V(7) atoms to form distorted OMgV4 square pyramids that share corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, corners with two equivalent O(7)V3Zn tetrahedra, edges with two equivalent O(1)Mg2V3 square pyramids, edges with two equivalent O(10)MgV4 square pyramids, and  an edgeedge with one O(2)V3Zn tetrahedra. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent V(1), and two equivalent Zn(3) atoms. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one V(7), and one Zn(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one V(1), one V(6), and two equivalent Zn(1) atoms. In the fourteenth O site, O(14) is bonded to two equivalent V(5), two equivalent V(8), and one Zn(3) atom to form distorted OV4Zn square pyramids that share corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, and edges with two equivalent O(14)V4Zn square pyramids. In the fifteenth O site, O(15) is bonded to one V(8), two equivalent V(4), and one Zn(4) atom to form OV3Zn tetrahedra that share corners with two equivalent O(14)V4Zn square pyramids, corners with two equivalent O(9)V4Zn square pyramids,  a cornercorner with one O(7)V3Zn tetrahedra, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, and  an edgeedge with one O(9)V4Zn square pyramid. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one V(1), two equivalent V(5), and two equivalent Zn(2) atoms. is represented by the CIF card [CIF]
data_MgV8Zn4O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.037
_cell_length_b   10.808
_cell_length_c   9.939
_cell_angle_alpha   94.365
_cell_angle_beta   89.718
_cell_angle_gamma   80.253
_symmetry_Int_Tables_number   1
_cell_volume   320.502
_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
  Mg  Mg0  1  0.915  0.838  0.618  1.0
  V  V1  1  0.640  0.578  0.378  1.0
  V  V2  1  0.848  0.083  0.117  1.0
  V  V3  1  0.201  0.090  0.605  1.0
  V  V4  1  0.726  0.425  0.130  1.0
  V  V5  1  0.190  0.396  0.626  1.0
  V  V6  1  0.814  0.949  0.362  1.0
  V  V7  1  0.407  0.941  0.874  1.0
  V  V8  1  0.126  0.550  0.910  1.0
  Zn  Zn9  1  0.351  0.777  0.136  1.0
  Zn  Zn10  1  0.319  0.283  0.355  1.0
  Zn  Zn11  1  0.574  0.627  0.653  1.0
  Zn  Zn12  1  0.559  0.237  0.863  1.0
  O  O13  1  0.324  0.913  0.497  1.0
  O  O14  1  0.663  0.125  0.479  1.0
  O  O15  1  0.333  0.012  0.237  1.0
  O  O16  1  0.971  0.899  0.003  1.0
  O  O17  1  0.587  0.606  0.029  1.0
  O  O18  1  0.820  0.252  0.216  1.0
  O  O19  1  0.357  0.113  0.984  1.0
  O  O20  1  0.060  0.246  0.732  1.0
  O  O21  1  0.193  0.483  0.259  1.0
  O  O22  1  0.804  0.010  0.734  1.0
  O  O23  1  0.066  0.652  0.525  1.0
  O  O24  1  0.451  0.791  0.747  1.0
  O  O25  1  0.853  0.777  0.267  1.0
  O  O26  1  0.650  0.493  0.775  1.0
  O  O27  1  0.258  0.386  0.995  1.0
  O  O28  1  0.691  0.400  0.485  1.0
[/CIF]
.
The compound described by MgV8Zn4O16 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(10), one O(11), two equivalent O(1), and two equivalent O(12) atoms to form MgO6 octahedra that share corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(3)O6 octahedra, edges with two equivalent V(7)O6 octahedra, and edges with two equivalent Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. There are eight inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(16), two equivalent O(11), and two equivalent O(9) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(6)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, edges with two equivalent Zn(2)O6 pentagonal pyramids, and  an edgeedge with one Zn(3)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 11-57°. In the second V site, V(2) is bonded to one O(4), one O(6), two equivalent O(3), and two equivalent O(7) atoms to form VO6 octahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent Zn(2)O6 pentagonal pyramids,  a cornercorner with one Zn(1)O4 tetrahedra,  an edgeedge with one V(6)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-54°. In the third V site, V(3) is bonded to one O(1), one O(8), two equivalent O(10), and two equivalent O(2) atoms to form VO6 octahedra that share corners with two equivalent V(7)O6 octahedra, corners with two equivalent Zn(2)O6 pentagonal pyramids,  an edgeedge with one V(7)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. In the fourth V site, V(4) is bonded to one O(5), one O(6), two equivalent O(15), and two equivalent O(9) atoms to form VO6 octahedra that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra,  a cornercorner with one Zn(1)O4 tetrahedra,  an edgeedge with one V(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra, edges with two equivalent Zn(2)O6 pentagonal pyramids, and edges with two equivalent V(8)O5 square pyramids. The corner-sharing octahedral tilt angles range from 11-54°. In the fifth V site, V(5) is bonded in a 5-coordinate geometry to one O(8), two equivalent O(14), and two equivalent O(16) atoms. In the sixth V site, V(6) is bonded to one O(13), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form VO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra,  a cornercorner with one Zn(2)O6 pentagonal pyramid, corners with two equivalent Zn(1)O4 tetrahedra,  an edgeedge with one Mg(1)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, edges with two equivalent V(3)O6 octahedra, and edges with two equivalent V(6)O6 octahedra. The corner-sharing octahedral tilt angles range from 2-55°. In the seventh V site, V(7) is bonded to one O(12), one O(7), two equivalent O(10), and two equivalent O(4) atoms to form VO6 octahedra that share corners with two equivalent V(3)O6 octahedra,  a cornercorner with one Zn(3)O4 tetrahedra, corners with two equivalent Zn(1)O4 tetrahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(7)O6 octahedra. The corner-sharing octahedral tilt angles range from 4-5°. In the eighth V site, V(8) is bonded to one O(15), two equivalent O(14), and two equivalent O(5) atoms to form VO5 square pyramids that share corners with two equivalent Zn(1)O4 tetrahedra, corners with two equivalent Zn(3)O4 tetrahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent V(8)O5 square pyramids. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to one O(4), one O(5), and two equivalent O(13) atoms to form distorted ZnO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra,  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(6)O6 octahedra, corners with two equivalent V(7)O6 octahedra, corners with two equivalent V(8)O5 square pyramids, and corners with two equivalent Zn(1)O4 tetrahedra. The corner-sharing octahedral tilt angles range from 30-89°. In the second Zn site, Zn(2) is bonded to one O(2), one O(9), two equivalent O(16), and two equivalent O(6) atoms to form distorted ZnO6 pentagonal pyramids that share  a cornercorner with one V(6)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with two equivalent V(3)O6 octahedra, edges with two equivalent V(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent Zn(2)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 41-74°. In the third Zn site, Zn(3) is bonded to one O(12), one O(14), and two equivalent O(11) atoms to form distorted ZnO4 tetrahedra that share  a cornercorner with one V(7)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with two equivalent V(8)O5 square pyramids, corners with two equivalent Zn(3)O4 tetrahedra,  an edgeedge with one V(1)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 13-29°. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to one O(15), one O(7), and two equivalent O(8) atoms. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one V(3), and two equivalent V(6) atoms to form OMg2V3 square pyramids that share  a cornercorner with one O(8)V2Zn2 tetrahedra, edges with two equivalent O(1)Mg2V3 square pyramids, edges with two equivalent O(10)MgV4 square pyramids, and edges with two equivalent O(2)V3Zn tetrahedra. In the second O site, O(2) is bonded to one V(6), two equivalent V(3), and one Zn(2) atom to form distorted OV3Zn tetrahedra that share  a cornercorner with one O(9)V4Zn square pyramid, corners with two equivalent O(10)MgV4 square pyramids, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra,  an edgeedge with one O(10)MgV4 square pyramid, and edges with two equivalent O(1)Mg2V3 square pyramids. In the third O site, O(3) is bonded in a square co-planar geometry to two equivalent V(2) and two equivalent V(6) atoms. In the fourth O site, O(4) is bonded in a rectangular see-saw-like geometry to one V(2), two equivalent V(7), and one Zn(1) atom. In the fifth O site, O(5) is bonded in a rectangular see-saw-like geometry to one V(4), two equivalent V(8), and one Zn(1) atom. In the sixth O site, O(6) is bonded to one V(2), one V(4), and two equivalent Zn(2) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, corners with two equivalent O(7)V3Zn tetrahedra, and edges with two equivalent O(9)V4Zn square pyramids. In the seventh O site, O(7) is bonded to one V(7), two equivalent V(2), and one Zn(4) atom to form OV3Zn tetrahedra that share corners with two equivalent O(10)MgV4 square pyramids,  a cornercorner with one O(15)V3Zn tetrahedra, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, and corners with two equivalent O(7)V3Zn tetrahedra. In the eighth O site, O(8) is bonded to one V(3), one V(5), and two equivalent Zn(4) atoms to form OV2Zn2 tetrahedra that share  a cornercorner with one O(1)Mg2V3 square pyramid, corners with two equivalent O(10)MgV4 square pyramids, corners with two equivalent O(14)V4Zn square pyramids, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, and corners with two equivalent O(7)V3Zn tetrahedra. In the ninth O site, O(9) is bonded to two equivalent V(1), two equivalent V(4), and one Zn(2) atom to form OV4Zn square pyramids that share  a cornercorner with one O(2)V3Zn tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, edges with two equivalent O(9)V4Zn square pyramids,  an edgeedge with one O(15)V3Zn tetrahedra, and edges with two equivalent O(6)V2Zn2 tetrahedra. In the tenth O site, O(10) is bonded to one Mg(1), two equivalent V(3), and two equivalent V(7) atoms to form distorted OMgV4 square pyramids that share corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(2)V3Zn tetrahedra, corners with two equivalent O(7)V3Zn tetrahedra, edges with two equivalent O(1)Mg2V3 square pyramids, edges with two equivalent O(10)MgV4 square pyramids, and  an edgeedge with one O(2)V3Zn tetrahedra. In the eleventh O site, O(11) is bonded in a 5-coordinate geometry to one Mg(1), two equivalent V(1), and two equivalent Zn(3) atoms. In the twelfth O site, O(12) is bonded in a rectangular see-saw-like geometry to two equivalent Mg(1), one V(7), and one Zn(3) atom. In the thirteenth O site, O(13) is bonded in a 4-coordinate geometry to one V(1), one V(6), and two equivalent Zn(1) atoms. In the fourteenth O site, O(14) is bonded to two equivalent V(5), two equivalent V(8), and one Zn(3) atom to form distorted OV4Zn square pyramids that share corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, and edges with two equivalent O(14)V4Zn square pyramids. In the fifteenth O site, O(15) is bonded to one V(8), two equivalent V(4), and one Zn(4) atom to form OV3Zn tetrahedra that share corners with two equivalent O(14)V4Zn square pyramids, corners with two equivalent O(9)V4Zn square pyramids,  a cornercorner with one O(7)V3Zn tetrahedra, corners with two equivalent O(6)V2Zn2 tetrahedra, corners with two equivalent O(8)V2Zn2 tetrahedra, corners with two equivalent O(15)V3Zn tetrahedra, and  an edgeedge with one O(9)V4Zn square pyramid. In the sixteenth O site, O(16) is bonded in a 5-coordinate geometry to one V(1), two equivalent V(5), and two equivalent Zn(2) atoms. is represented by the CIF card [CIF]
data_MgV8Zn4O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.037
_cell_length_b   10.808
_cell_length_c   9.939
_cell_angle_alpha   94.365
_cell_angle_beta   89.718
_cell_angle_gamma   80.253
_symmetry_Int_Tables_number   1
_cell_volume   320.502
_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
  Mg  Mg0  1  0.915  0.838  0.618  1.0
  V  V1  1  0.640  0.578  0.378  1.0
  V  V2  1  0.848  0.083  0.117  1.0
  V  V3  1  0.201  0.090  0.605  1.0
  V  V4  1  0.726  0.425  0.130  1.0
  V  V5  1  0.190  0.396  0.626  1.0
  V  V6  1  0.814  0.949  0.362  1.0
  V  V7  1  0.407  0.941  0.874  1.0
  V  V8  1  0.126  0.550  0.910  1.0
  Zn  Zn9  1  0.351  0.777  0.136  1.0
  Zn  Zn10  1  0.319  0.283  0.355  1.0
  Zn  Zn11  1  0.574  0.627  0.653  1.0
  Zn  Zn12  1  0.559  0.237  0.863  1.0
  O  O13  1  0.324  0.913  0.497  1.0
  O  O14  1  0.663  0.125  0.479  1.0
  O  O15  1  0.333  0.012  0.237  1.0
  O  O16  1  0.971  0.899  0.003  1.0
  O  O17  1  0.587  0.606  0.029  1.0
  O  O18  1  0.820  0.252  0.216  1.0
  O  O19  1  0.357  0.113  0.984  1.0
  O  O20  1  0.060  0.246  0.732  1.0
  O  O21  1  0.193  0.483  0.259  1.0
  O  O22  1  0.804  0.010  0.734  1.0
  O  O23  1  0.066  0.652  0.525  1.0
  O  O24  1  0.451  0.791  0.747  1.0
  O  O25  1  0.853  0.777  0.267  1.0
  O  O26  1  0.650  0.493  0.775  1.0
  O  O27  1  0.258  0.386  0.995  1.0
  O  O28  1  0.691  0.400  0.485  1.0
[/CIF]
.