The material structure described by MgV8Zn4O16 crystallizes in the monoclinic Pm space group. Mg(1) is bonded to two equivalent O(4) and two equivalent O(9) atoms to form distorted MgO4 trigonal pyramids that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent Mg(1)O4 trigonal pyramids, and edges with four equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 7-30°. In the second V site, V(2) is bonded to one O(4), one O(5), two equivalent O(3), and two equivalent O(6) 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 Mg(1)O4 trigonal pyramid,  an edgeedge with one V(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-58°. In the third V site, V(3) is bonded to one O(1), one O(7), two equivalent O(2), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-58°. In the fourth V site, V(4) is bonded to one O(6), one O(9), two equivalent O(4), and two equivalent O(8) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent V(2)O6 octahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent Mg(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 3-24°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in an L-shaped geometry to two equivalent O(10) atoms. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(5) atoms. In the third Zn site, Zn(3) is bonded in a trigonal planar geometry to one O(9) and two equivalent O(1) atoms. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(7) atoms. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one V(3), two equivalent V(1), and one Zn(3) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(9)Mg2V2Zn square pyramid,  a cornercorner with one O(7)V2Zn2 tetrahedra, corners with two equivalent O(10)V2Zn2 trigonal pyramids, corners with three equivalent O(1)V3Zn trigonal pyramids, and edges with two equivalent O(2)V3Zn trigonal pyramids. In the second O site, O(2) is bonded to one V(1), two equivalent V(3), and one Zn(2) atom to form OV3Zn trigonal pyramids that share corners with two equivalent O(7)V2Zn2 tetrahedra,  a cornercorner with one O(10)V2Zn2 trigonal pyramid, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with three equivalent O(2)V3Zn trigonal pyramids, and edges with two equivalent O(1)V3Zn trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent V(1) and two equivalent V(2) atoms. In the fourth O site, O(4) is bonded to one Mg(1), one V(2), and two equivalent V(4) atoms to form distorted OMgV3 trigonal pyramids that share  a cornercorner with one O(5)V2Zn2 trigonal pyramid, corners with three equivalent O(4)MgV3 trigonal pyramids, edges with two equivalent O(9)Mg2V2Zn square pyramids, and edges with two equivalent O(6)V3Zn trigonal pyramids. In the fifth O site, O(5) is bonded to two equivalent V(2) and two equivalent Zn(2) atoms to form OV2Zn2 trigonal pyramids that share corners with two equivalent O(4)MgV3 trigonal pyramids, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with four equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(6)V3Zn trigonal pyramids. In the sixth O site, O(6) is bonded to one V(4), two equivalent V(2), and one Zn(4) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(9)Mg2V2Zn square pyramid, corners with two equivalent O(7)V2Zn2 tetrahedra, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with three equivalent O(6)V3Zn trigonal pyramids, and edges with two equivalent O(4)MgV3 trigonal pyramids. In the seventh O site, O(7) is bonded to two equivalent V(3) and two equivalent Zn(4) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(7)V2Zn2 tetrahedra, corners with two equivalent O(1)V3Zn trigonal pyramids, corners with four equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(6)V3Zn trigonal pyramids. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to two equivalent V(3) and two equivalent V(4) atoms. In the ninth O site, O(9) is bonded to two equivalent Mg(1), two equivalent V(4), and one Zn(3) atom to form distorted OMg2V2Zn square pyramids that share corners with two equivalent O(9)Mg2V2Zn square pyramids, corners with two equivalent O(1)V3Zn trigonal pyramids, corners with two equivalent O(6)V3Zn trigonal pyramids, and edges with four equivalent O(4)MgV3 trigonal pyramids. In the tenth O site, O(10) is bonded to two equivalent V(1) and two equivalent Zn(1) atoms to form OV2Zn2 trigonal pyramids that share corners with two equivalent O(10)V2Zn2 trigonal pyramids, corners with two equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(1)V3Zn trigonal pyramids. is represented by the CIF card [CIF]
data_MgV8Zn4O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.041
_cell_length_b   10.693
_cell_length_c   9.914
_cell_angle_alpha   90.002
_cell_angle_beta   92.654
_cell_angle_gamma   90.020
_symmetry_Int_Tables_number   1
_cell_volume   322.005
_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  0.749  0.750  0.964  1.0
  V  V1  1  0.755  0.564  0.391  1.0
  V  V2  1  0.777  0.081  0.124  1.0
  V  V3  1  0.248  0.084  0.613  1.0
  V  V4  1  0.777  0.419  0.124  1.0
  V  V5  1  0.248  0.416  0.613  1.0
  V  V6  1  0.756  0.936  0.391  1.0
  V  V7  1  0.240  0.970  0.875  1.0
  V  V8  1  0.240  0.530  0.875  1.0
  Zn  Zn9  1  0.254  0.750  0.198  1.0
  Zn  Zn10  1  0.419  0.250  0.358  1.0
  Zn  Zn11  1  0.252  0.750  0.630  1.0
  Zn  Zn12  1  0.853  0.250  0.860  1.0
  O  O13  1  0.266  0.906  0.528  1.0
  O  O14  1  0.739  0.115  0.480  1.0
  O  O15  1  0.312  0.001  0.246  1.0
  O  O16  1  0.756  0.930  0.997  1.0
  O  O17  1  0.756  0.570  0.997  1.0
  O  O18  1  0.888  0.250  0.221  1.0
  O  O19  1  0.235  0.128  0.988  1.0
  O  O20  1  0.304  0.250  0.712  1.0
  O  O21  1  0.312  0.499  0.247  1.0
  O  O22  1  0.740  0.022  0.745  1.0
  O  O23  1  0.265  0.594  0.527  1.0
  O  O24  1  0.231  0.750  0.825  1.0
  O  O25  1  0.773  0.750  0.338  1.0
  O  O26  1  0.740  0.479  0.745  1.0
  O  O27  1  0.234  0.372  0.988  1.0
  O  O28  1  0.739  0.385  0.480  1.0
[/CIF]
.
The material structure described by MgV8Zn4O16 crystallizes in the monoclinic Pm space group. Mg(1) is bonded to two equivalent O(4) and two equivalent O(9) atoms to form distorted MgO4 trigonal pyramids that share corners with two equivalent V(2)O6 octahedra, corners with two equivalent Mg(1)O4 trigonal pyramids, and edges with four equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles are 28°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(10), one O(2), two equivalent O(1), and two equivalent O(3) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 7-30°. In the second V site, V(2) is bonded to one O(4), one O(5), two equivalent O(3), and two equivalent O(6) 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 Mg(1)O4 trigonal pyramid,  an edgeedge with one V(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 7-58°. In the third V site, V(3) is bonded to one O(1), one O(7), two equivalent O(2), and two equivalent O(8) atoms to form a mixture of edge and corner-sharing VO6 octahedra. The corner-sharing octahedral tilt angles range from 3-58°. In the fourth V site, V(4) is bonded to one O(6), one O(9), two equivalent O(4), and two equivalent O(8) atoms to form distorted VO6 octahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent V(2)O6 octahedra, edges with two equivalent V(4)O6 octahedra, and edges with two equivalent Mg(1)O4 trigonal pyramids. The corner-sharing octahedral tilt angles range from 3-24°. There are four inequivalent Zn sites. In the first Zn site, Zn(1) is bonded in an L-shaped geometry to two equivalent O(10) atoms. In the second Zn site, Zn(2) is bonded in a rectangular see-saw-like geometry to two equivalent O(2) and two equivalent O(5) atoms. In the third Zn site, Zn(3) is bonded in a trigonal planar geometry to one O(9) and two equivalent O(1) atoms. In the fourth Zn site, Zn(4) is bonded in a rectangular see-saw-like geometry to two equivalent O(6) and two equivalent O(7) atoms. There are ten inequivalent O sites. In the first O site, O(1) is bonded to one V(3), two equivalent V(1), and one Zn(3) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(9)Mg2V2Zn square pyramid,  a cornercorner with one O(7)V2Zn2 tetrahedra, corners with two equivalent O(10)V2Zn2 trigonal pyramids, corners with three equivalent O(1)V3Zn trigonal pyramids, and edges with two equivalent O(2)V3Zn trigonal pyramids. In the second O site, O(2) is bonded to one V(1), two equivalent V(3), and one Zn(2) atom to form OV3Zn trigonal pyramids that share corners with two equivalent O(7)V2Zn2 tetrahedra,  a cornercorner with one O(10)V2Zn2 trigonal pyramid, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with three equivalent O(2)V3Zn trigonal pyramids, and edges with two equivalent O(1)V3Zn trigonal pyramids. In the third O site, O(3) is bonded in a rectangular see-saw-like geometry to two equivalent V(1) and two equivalent V(2) atoms. In the fourth O site, O(4) is bonded to one Mg(1), one V(2), and two equivalent V(4) atoms to form distorted OMgV3 trigonal pyramids that share  a cornercorner with one O(5)V2Zn2 trigonal pyramid, corners with three equivalent O(4)MgV3 trigonal pyramids, edges with two equivalent O(9)Mg2V2Zn square pyramids, and edges with two equivalent O(6)V3Zn trigonal pyramids. In the fifth O site, O(5) is bonded to two equivalent V(2) and two equivalent Zn(2) atoms to form OV2Zn2 trigonal pyramids that share corners with two equivalent O(4)MgV3 trigonal pyramids, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with four equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(6)V3Zn trigonal pyramids. In the sixth O site, O(6) is bonded to one V(4), two equivalent V(2), and one Zn(4) atom to form distorted OV3Zn trigonal pyramids that share  a cornercorner with one O(9)Mg2V2Zn square pyramid, corners with two equivalent O(7)V2Zn2 tetrahedra, corners with two equivalent O(5)V2Zn2 trigonal pyramids, corners with three equivalent O(6)V3Zn trigonal pyramids, and edges with two equivalent O(4)MgV3 trigonal pyramids. In the seventh O site, O(7) is bonded to two equivalent V(3) and two equivalent Zn(4) atoms to form OV2Zn2 tetrahedra that share corners with two equivalent O(7)V2Zn2 tetrahedra, corners with two equivalent O(1)V3Zn trigonal pyramids, corners with four equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(6)V3Zn trigonal pyramids. In the eighth O site, O(8) is bonded in a rectangular see-saw-like geometry to two equivalent V(3) and two equivalent V(4) atoms. In the ninth O site, O(9) is bonded to two equivalent Mg(1), two equivalent V(4), and one Zn(3) atom to form distorted OMg2V2Zn square pyramids that share corners with two equivalent O(9)Mg2V2Zn square pyramids, corners with two equivalent O(1)V3Zn trigonal pyramids, corners with two equivalent O(6)V3Zn trigonal pyramids, and edges with four equivalent O(4)MgV3 trigonal pyramids. In the tenth O site, O(10) is bonded to two equivalent V(1) and two equivalent Zn(1) atoms to form OV2Zn2 trigonal pyramids that share corners with two equivalent O(10)V2Zn2 trigonal pyramids, corners with two equivalent O(2)V3Zn trigonal pyramids, and corners with four equivalent O(1)V3Zn trigonal pyramids. is represented by the CIF card [CIF]
data_MgV8Zn4O16
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.041
_cell_length_b   10.693
_cell_length_c   9.914
_cell_angle_alpha   90.002
_cell_angle_beta   92.654
_cell_angle_gamma   90.020
_symmetry_Int_Tables_number   1
_cell_volume   322.005
_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  0.749  0.750  0.964  1.0
  V  V1  1  0.755  0.564  0.391  1.0
  V  V2  1  0.777  0.081  0.124  1.0
  V  V3  1  0.248  0.084  0.613  1.0
  V  V4  1  0.777  0.419  0.124  1.0
  V  V5  1  0.248  0.416  0.613  1.0
  V  V6  1  0.756  0.936  0.391  1.0
  V  V7  1  0.240  0.970  0.875  1.0
  V  V8  1  0.240  0.530  0.875  1.0
  Zn  Zn9  1  0.254  0.750  0.198  1.0
  Zn  Zn10  1  0.419  0.250  0.358  1.0
  Zn  Zn11  1  0.252  0.750  0.630  1.0
  Zn  Zn12  1  0.853  0.250  0.860  1.0
  O  O13  1  0.266  0.906  0.528  1.0
  O  O14  1  0.739  0.115  0.480  1.0
  O  O15  1  0.312  0.001  0.246  1.0
  O  O16  1  0.756  0.930  0.997  1.0
  O  O17  1  0.756  0.570  0.997  1.0
  O  O18  1  0.888  0.250  0.221  1.0
  O  O19  1  0.235  0.128  0.988  1.0
  O  O20  1  0.304  0.250  0.712  1.0
  O  O21  1  0.312  0.499  0.247  1.0
  O  O22  1  0.740  0.022  0.745  1.0
  O  O23  1  0.265  0.594  0.527  1.0
  O  O24  1  0.231  0.750  0.825  1.0
  O  O25  1  0.773  0.750  0.338  1.0
  O  O26  1  0.740  0.479  0.745  1.0
  O  O27  1  0.234  0.372  0.988  1.0
  O  O28  1  0.739  0.385  0.480  1.0
[/CIF]
.