The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(13), one O(16), two equivalent O(15), and two equivalent O(4) atoms. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(7), two equivalent O(15), and two equivalent O(4) atoms to form distorted VO6 octahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  a cornercorner with one Ge(2)O5 square pyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  an edgeedge with one Ge(2)O5 square pyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-40°. In the second V site, V(2) is bonded to one O(11), one O(14), one O(3), one O(5), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent Ge(1)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and edges with two equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. In the third V site, V(3) is bonded to one O(12), one O(14), one O(3), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent Ge(4)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and  an edgeedge with one Ge(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-51°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(2), and one O(4) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-68°. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(12), one O(14), one O(16), one O(6), one O(7), and one O(8) atom to form GeO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(3)O6 octahedra, and corners with four equivalent Ge(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 40-51°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(16), one O(6), and one O(7) atom to form distorted GeO5 square pyramids that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-64°. In the third Ge site, Ge(3) is bonded to one O(1), one O(10), one O(11), one O(13), one O(2), and one O(5) atom to form GeO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra, corners with four equivalent V(4)O5 trigonal bipyramids, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-48°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(10), one O(11), one O(3), one O(5), and one O(9) atom to form GeO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with four equivalent V(2)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 42-54°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(4), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one V(1), one V(4), and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(4) atom. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one V(4), and two equivalent V(1) atoms to form distorted OMg2V3 trigonal bipyramids that share corners with four equivalent O(4)Mg2V3 trigonal bipyramids and edges with four equivalent O(15)Mg2V2Ge trigonal bipyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(2), one Ge(3), and one Ge(4) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one V(3), one Ge(1), and one Ge(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one V(1), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one V(4), one Ge(3), and one Ge(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one V(2), one Ge(3), and one Ge(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one V(3), one Ge(1), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded to two equivalent Mg(1), two equivalent V(1), and one Ge(2) atom to form distorted OMg2V2Ge trigonal bipyramids that share corners with four equivalent O(15)Mg2V2Ge trigonal bipyramids and edges with four equivalent O(4)Mg2V3 trigonal bipyramids. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgV4(GeO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.342
_cell_length_b   4.620
_cell_length_c   12.903
_cell_angle_alpha   85.973
_cell_angle_beta   90.082
_cell_angle_gamma   89.582
_symmetry_Int_Tables_number   1
_cell_volume   258.174
_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  0.637  0.951  0.568  1.0
  V  V1  1  0.146  0.528  0.560  1.0
  V  V2  1  0.501  0.763  0.070  1.0
  V  V3  1  0.494  0.285  0.947  1.0
  V  V4  1  0.031  0.178  0.396  1.0
  Ge  Ge5  1  0.003  0.819  0.829  1.0
  Ge  Ge6  1  0.535  0.353  0.732  1.0
  Ge  Ge7  1  0.516  0.715  0.300  1.0
  Ge  Ge8  1  0.998  0.248  0.169  1.0
  O  O9  1  0.228  0.039  0.282  1.0
  O  O10  1  0.278  0.508  0.405  1.0
  O  O11  1  0.244  0.092  0.062  1.0
  O  O12  1  0.152  0.033  0.538  1.0
  O  O13  1  0.280  0.568  0.181  1.0
  O  O14  1  0.269  0.137  0.830  1.0
  O  O15  1  0.215  0.627  0.716  1.0
  O  O16  1  0.252  0.618  0.945  1.0
  O  O17  1  0.757  0.437  0.062  1.0
  O  O18  1  0.788  0.395  0.286  1.0
  O  O19  1  0.730  0.913  0.181  1.0
  O  O20  1  0.744  0.492  0.837  1.0
  O  O21  1  0.711  0.899  0.410  1.0
  O  O22  1  0.752  0.965  0.945  1.0
  O  O23  1  0.639  0.478  0.593  1.0
  O  O24  1  0.758  0.015  0.718  1.0
[/CIF]
.
The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 6-coordinate geometry to one O(13), one O(16), two equivalent O(15), and two equivalent O(4) atoms. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(2), one O(7), two equivalent O(15), and two equivalent O(4) atoms to form distorted VO6 octahedra that share  a cornercorner with one Ge(1)O6 octahedra,  a cornercorner with one Ge(3)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  a cornercorner with one Ge(2)O5 square pyramid,  a cornercorner with one V(4)O5 trigonal bipyramid,  an edgeedge with one Ge(2)O5 square pyramid, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 14-40°. In the second V site, V(2) is bonded to one O(11), one O(14), one O(3), one O(5), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent Ge(1)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra,  an edgeedge with one Ge(3)O6 octahedra, and edges with two equivalent V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-54°. In the third V site, V(3) is bonded to one O(12), one O(14), one O(3), one O(6), one O(8), and one O(9) atom to form VO6 octahedra that share corners with two equivalent Ge(4)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent V(2)O6 octahedra, and  an edgeedge with one Ge(2)O5 square pyramid. The corner-sharing octahedral tilt angles range from 45-51°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(2), and one O(4) atom to form distorted VO5 trigonal bipyramids that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Ge(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 51-68°. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(12), one O(14), one O(16), one O(6), one O(7), and one O(8) atom to form GeO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(3)O6 octahedra, and corners with four equivalent Ge(2)O5 square pyramids. The corner-sharing octahedral tilt angles range from 40-51°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(16), one O(6), and one O(7) atom to form distorted GeO5 square pyramids that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 42-64°. In the third Ge site, Ge(3) is bonded to one O(1), one O(10), one O(11), one O(13), one O(2), and one O(5) atom to form GeO6 octahedra that share  a cornercorner with one V(1)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra, corners with four equivalent V(4)O5 trigonal bipyramids, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-48°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(10), one O(11), one O(3), one O(5), and one O(9) atom to form GeO6 octahedra that share corners with two equivalent V(3)O6 octahedra, corners with four equivalent V(2)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra, and  an edgeedge with one V(4)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 42-54°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one V(4), one Ge(3), and one Ge(4) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one V(1), one V(4), and one Ge(3) atom. In the third O site, O(3) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(4) atom. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one V(4), and two equivalent V(1) atoms to form distorted OMg2V3 trigonal bipyramids that share corners with four equivalent O(4)Mg2V3 trigonal bipyramids and edges with four equivalent O(15)Mg2V2Ge trigonal bipyramids. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one V(2), one Ge(3), and one Ge(4) atom. In the sixth O site, O(6) is bonded in a distorted T-shaped geometry to one V(3), one Ge(1), and one Ge(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one V(1), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(4) atom. In the tenth O site, O(10) is bonded in a distorted trigonal planar geometry to one V(4), one Ge(3), and one Ge(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal planar geometry to one V(2), one Ge(3), and one Ge(4) atom. In the twelfth O site, O(12) is bonded in a distorted trigonal planar geometry to one V(3), one Ge(1), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one Mg(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted T-shaped geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded to two equivalent Mg(1), two equivalent V(1), and one Ge(2) atom to form distorted OMg2V2Ge trigonal bipyramids that share corners with four equivalent O(15)Mg2V2Ge trigonal bipyramids and edges with four equivalent O(4)Mg2V3 trigonal bipyramids. In the sixteenth O site, O(16) is bonded in a distorted trigonal planar geometry to one Mg(1), one Ge(1), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgV4(GeO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.342
_cell_length_b   4.620
_cell_length_c   12.903
_cell_angle_alpha   85.973
_cell_angle_beta   90.082
_cell_angle_gamma   89.582
_symmetry_Int_Tables_number   1
_cell_volume   258.174
_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  0.637  0.951  0.568  1.0
  V  V1  1  0.146  0.528  0.560  1.0
  V  V2  1  0.501  0.763  0.070  1.0
  V  V3  1  0.494  0.285  0.947  1.0
  V  V4  1  0.031  0.178  0.396  1.0
  Ge  Ge5  1  0.003  0.819  0.829  1.0
  Ge  Ge6  1  0.535  0.353  0.732  1.0
  Ge  Ge7  1  0.516  0.715  0.300  1.0
  Ge  Ge8  1  0.998  0.248  0.169  1.0
  O  O9  1  0.228  0.039  0.282  1.0
  O  O10  1  0.278  0.508  0.405  1.0
  O  O11  1  0.244  0.092  0.062  1.0
  O  O12  1  0.152  0.033  0.538  1.0
  O  O13  1  0.280  0.568  0.181  1.0
  O  O14  1  0.269  0.137  0.830  1.0
  O  O15  1  0.215  0.627  0.716  1.0
  O  O16  1  0.252  0.618  0.945  1.0
  O  O17  1  0.757  0.437  0.062  1.0
  O  O18  1  0.788  0.395  0.286  1.0
  O  O19  1  0.730  0.913  0.181  1.0
  O  O20  1  0.744  0.492  0.837  1.0
  O  O21  1  0.711  0.899  0.410  1.0
  O  O22  1  0.752  0.965  0.945  1.0
  O  O23  1  0.639  0.478  0.593  1.0
  O  O24  1  0.758  0.015  0.718  1.0
[/CIF]
.