The structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(13), one O(15), one O(16), one O(4), one O(6), and one O(7) atom to form distorted MgO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one Ge(3)O5 square pyramid, corners with two equivalent Ge(1)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent Ge(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-39°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(15), one O(16), one O(2), one O(4), and one O(7) atom to form distorted VO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Ge(3)O5 square pyramids,  a cornercorner with one Ge(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra,  an edgeedge with one Ge(1)O5 trigonal bipyramid, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 7°. 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 three equivalent Ge(4)O4 tetrahedra, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent V(3)O6 octahedra, and  an edgeedge with one Ge(3)O5 square pyramid. 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  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Ge(4)O4 tetrahedra, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent V(2)O6 octahedra, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 39°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(15), one O(2), and one O(4) atom to form distorted VO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with three equivalent Ge(3)O5 square pyramids,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(2)O5 trigonal bipyramid,  an edgeedge with one Mg(1)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. 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(7), and one O(8) atom to form distorted GeO5 trigonal bipyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra,  a cornercorner with one Ge(2)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 26-56°. 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 GeO5 trigonal bipyramids that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one Ge(1)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and  an edgeedge with one Ge(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 9-53°. In the third Ge site, Ge(3) is bonded to one O(10), one O(11), one O(13), one O(2), and one O(5) atom to form GeO5 square pyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(4)O6 octahedra,  a cornercorner with one Ge(4)O4 tetrahedra, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-62°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and  a cornercorner with one Ge(3)O5 square pyramid. The corner-sharing octahedral tilt angles range from 44-62°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(4) and one Ge(4) atom. In the second O site, O(2) is bonded in a 3-coordinate 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 in a distorted trigonal non-coplanar geometry to one Mg(1), one V(1), and one V(4) atom. 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 T-shaped geometry to one Mg(1), one V(3), and one Ge(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal pyramidal geometry to one Mg(1), one V(1), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate 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 T-shaped geometry to one V(2), one V(3), and one Ge(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(4) and one Ge(3) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one V(2) and one Ge(3) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one V(3), one Ge(1), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(2) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(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   4.871
_cell_length_b   5.306
_cell_length_c   11.046
_cell_angle_alpha   89.705
_cell_angle_beta   90.272
_cell_angle_gamma   87.489
_symmetry_Int_Tables_number   1
_cell_volume   285.266
_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  0.481  0.036  0.616  1.0
  V  V1  1  0.970  0.712  0.546  1.0
  V  V2  1  0.554  0.750  0.065  1.0
  V  V3  1  0.580  0.246  0.936  1.0
  V  V4  1  0.919  0.204  0.413  1.0
  Ge  Ge5  1  0.031  0.710  0.842  1.0
  Ge  Ge6  1  0.581  0.499  0.713  1.0
  Ge  Ge7  1  0.461  0.675  0.331  1.0
  Ge  Ge8  1  0.109  0.288  0.144  1.0
  O  O9  1  0.112  0.090  0.273  1.0
  O  O10  1  0.189  0.551  0.425  1.0
  O  O11  1  0.317  0.092  0.040  1.0
  O  O12  1  0.139  0.051  0.524  1.0
  O  O13  1  0.274  0.575  0.180  1.0
  O  O14  1  0.421  0.220  0.771  1.0
  O  O15  1  0.257  0.699  0.699  1.0
  O  O16  1  0.331  0.607  0.938  1.0
  O  O17  1  0.794  0.402  0.069  1.0
  O  O18  1  0.688  0.403  0.328  1.0
  O  O19  1  0.641  0.853  0.210  1.0
  O  O20  1  0.857  0.420  0.828  1.0
  O  O21  1  0.664  0.883  0.449  1.0
  O  O22  1  0.809  0.900  0.947  1.0
  O  O23  1  0.709  0.383  0.572  1.0
  O  O24  1  0.769  0.807  0.702  1.0
[/CIF]
.
The structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded to one O(13), one O(15), one O(16), one O(4), one O(6), and one O(7) atom to form distorted MgO6 octahedra that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(3)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one Ge(3)O5 square pyramid, corners with two equivalent Ge(1)O5 trigonal bipyramids,  an edgeedge with one V(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and edges with two equivalent Ge(2)O5 trigonal bipyramids. The corner-sharing octahedral tilt angles range from 7-39°. There are four inequivalent V sites. In the first V site, V(1) is bonded to one O(13), one O(15), one O(16), one O(2), one O(4), and one O(7) atom to form distorted VO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Ge(3)O5 square pyramids,  a cornercorner with one Ge(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O6 octahedra, edges with two equivalent V(4)O6 octahedra,  an edgeedge with one Ge(1)O5 trigonal bipyramid, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 7°. 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 three equivalent Ge(4)O4 tetrahedra, corners with two equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent V(3)O6 octahedra, and  an edgeedge with one Ge(3)O5 square pyramid. 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  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent Ge(4)O4 tetrahedra, corners with three equivalent Ge(1)O5 trigonal bipyramids, edges with two equivalent V(2)O6 octahedra, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 39°. In the fourth V site, V(4) is bonded to one O(1), one O(10), one O(13), one O(15), one O(2), and one O(4) atom to form distorted VO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with three equivalent Ge(3)O5 square pyramids,  a cornercorner with one Ge(4)O4 tetrahedra,  a cornercorner with one Ge(2)O5 trigonal bipyramid,  an edgeedge with one Mg(1)O6 octahedra, and edges with two equivalent V(1)O6 octahedra. The corner-sharing octahedral tilt angles are 30°. 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(7), and one O(8) atom to form distorted GeO5 trigonal bipyramids that share corners with two equivalent Mg(1)O6 octahedra, corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra,  a cornercorner with one Ge(2)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra, and  an edgeedge with one Ge(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 26-56°. 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 GeO5 trigonal bipyramids that share  a cornercorner with one V(1)O6 octahedra,  a cornercorner with one V(4)O6 octahedra,  a cornercorner with one Ge(1)O5 trigonal bipyramid,  an edgeedge with one V(1)O6 octahedra,  an edgeedge with one V(3)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and  an edgeedge with one Ge(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles range from 9-53°. In the third Ge site, Ge(3) is bonded to one O(10), one O(11), one O(13), one O(2), and one O(5) atom to form GeO5 square pyramids that share  a cornercorner with one Mg(1)O6 octahedra, corners with two equivalent V(1)O6 octahedra, corners with three equivalent V(4)O6 octahedra,  a cornercorner with one Ge(4)O4 tetrahedra, and  an edgeedge with one V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 34-62°. In the fourth Ge site, Ge(4) is bonded to one O(1), one O(3), one O(5), and one O(9) atom to form GeO4 tetrahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, corners with three equivalent V(2)O6 octahedra, and  a cornercorner with one Ge(3)O5 square pyramid. The corner-sharing octahedral tilt angles range from 44-62°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one V(4) and one Ge(4) atom. In the second O site, O(2) is bonded in a 3-coordinate 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 in a distorted trigonal non-coplanar geometry to one Mg(1), one V(1), and one V(4) atom. 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 T-shaped geometry to one Mg(1), one V(3), and one Ge(2) atom. In the seventh O site, O(7) is bonded in a distorted trigonal pyramidal geometry to one Mg(1), one V(1), one Ge(1), and one Ge(2) atom. In the eighth O site, O(8) is bonded in a 3-coordinate 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 T-shaped geometry to one V(2), one V(3), and one Ge(4) atom. In the tenth O site, O(10) is bonded in a bent 150 degrees geometry to one V(4) and one Ge(3) atom. In the eleventh O site, O(11) is bonded in a water-like geometry to one V(2) and one Ge(3) atom. In the twelfth O site, O(12) is bonded in a distorted T-shaped geometry to one V(3), one Ge(1), and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a distorted trigonal planar geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(2) atom. In the sixteenth O site, O(16) is bonded in a rectangular see-saw-like geometry to one Mg(1), one V(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   4.871
_cell_length_b   5.306
_cell_length_c   11.046
_cell_angle_alpha   89.705
_cell_angle_beta   90.272
_cell_angle_gamma   87.489
_symmetry_Int_Tables_number   1
_cell_volume   285.266
_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  0.481  0.036  0.616  1.0
  V  V1  1  0.970  0.712  0.546  1.0
  V  V2  1  0.554  0.750  0.065  1.0
  V  V3  1  0.580  0.246  0.936  1.0
  V  V4  1  0.919  0.204  0.413  1.0
  Ge  Ge5  1  0.031  0.710  0.842  1.0
  Ge  Ge6  1  0.581  0.499  0.713  1.0
  Ge  Ge7  1  0.461  0.675  0.331  1.0
  Ge  Ge8  1  0.109  0.288  0.144  1.0
  O  O9  1  0.112  0.090  0.273  1.0
  O  O10  1  0.189  0.551  0.425  1.0
  O  O11  1  0.317  0.092  0.040  1.0
  O  O12  1  0.139  0.051  0.524  1.0
  O  O13  1  0.274  0.575  0.180  1.0
  O  O14  1  0.421  0.220  0.771  1.0
  O  O15  1  0.257  0.699  0.699  1.0
  O  O16  1  0.331  0.607  0.938  1.0
  O  O17  1  0.794  0.402  0.069  1.0
  O  O18  1  0.688  0.403  0.328  1.0
  O  O19  1  0.641  0.853  0.210  1.0
  O  O20  1  0.857  0.420  0.828  1.0
  O  O21  1  0.664  0.883  0.449  1.0
  O  O22  1  0.809  0.900  0.947  1.0
  O  O23  1  0.709  0.383  0.572  1.0
  O  O24  1  0.769  0.807  0.702  1.0
[/CIF]
.