The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(11), one O(3), and one O(5) atom. 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 VO6 octahedra that share corners with two equivalent Ge(3)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, edges with two equivalent V(4)O6 octahedra, and  an edgeedge with one Ge(1)O5 square pyramid. 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 distorted VO6 octahedra that share corners with two equivalent Ge(1)O5 square pyramids,  a cornercorner with one Ge(3)O4 tetrahedra, corners with three equivalent Ge(4)O4 tetrahedra, and edges with two equivalent V(3)O6 octahedra. 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 distorted VO6 octahedra that share corners with three equivalent Ge(1)O5 square pyramids,  a cornercorner with one Ge(2)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra, and edges with two equivalent V(2)O6 octahedra. 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 VO6 octahedra that share  a cornercorner with one Ge(4)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with three equivalent Ge(3)O4 tetrahedra, and edges with two equivalent V(1)O6 octahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(14), one O(16), one O(6), one O(7), and one O(8) atom to form GeO5 square pyramids that share corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-59°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(4), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with three equivalent V(1)O6 octahedra, and  a cornercorner with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 26-69°. In the third Ge site, Ge(3) is bonded to one O(1), one O(13), one O(2), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and corners with three equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. In the fourth Ge site, Ge(4) is bonded to one O(10), one O(11), one O(3), and one O(9) atom to form distorted GeO4 tetrahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, and corners with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-59°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one V(4), and one Ge(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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 rectangular see-saw-like geometry to one Mg(1), one V(2), one V(3), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(4), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mg(1), one V(2), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(3) and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar 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 trigonal planar geometry to one V(2), one V(3), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate 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 non-coplanar geometry to one Mg(1), one V(4), and one Ge(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one V(2), and one Ge(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one V(3) and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one V(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one V(4), and one Ge(2) atom. In the sixteenth O site, O(16) is bonded in a water-like geometry to one V(1) and one Ge(1) atom. is represented by the CIF card [CIF]
data_MgV4(GeO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.838
_cell_length_b   5.333
_cell_length_c   11.157
_cell_angle_alpha   94.719
_cell_angle_beta   90.943
_cell_angle_gamma   90.499
_symmetry_Int_Tables_number   1
_cell_volume   286.864
_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  0.496  0.269  0.235  1.0
  V  V1  1  0.956  0.782  0.577  1.0
  V  V2  1  0.517  0.743  0.067  1.0
  V  V3  1  0.466  0.244  0.917  1.0
  V  V4  1  0.990  0.262  0.435  1.0
  Ge  Ge5  1  0.021  0.753  0.843  1.0
  Ge  Ge6  1  0.447  0.370  0.646  1.0
  Ge  Ge7  1  0.432  0.797  0.371  1.0
  Ge  Ge8  1  0.950  0.201  0.129  1.0
  O  O9  1  0.287  0.086  0.344  1.0
  O  O10  1  0.225  0.613  0.466  1.0
  O  O11  1  0.285  0.123  0.082  1.0
  O  O12  1  0.207  0.131  0.578  1.0
  O  O13  1  0.404  0.623  0.228  1.0
  O  O14  1  0.222  0.042  0.845  1.0
  O  O15  1  0.207  0.612  0.699  1.0
  O  O16  1  0.244  0.566  0.944  1.0
  O  O17  1  0.732  0.392  0.037  1.0
  O  O18  1  0.897  0.379  0.274  1.0
  O  O19  1  0.751  0.954  0.179  1.0
  O  O20  1  0.648  0.336  0.779  1.0
  O  O21  1  0.750  0.917  0.448  1.0
  O  O22  1  0.748  0.886  0.944  1.0
  O  O23  1  0.721  0.452  0.543  1.0
  O  O24  1  0.790  0.844  0.712  1.0
[/CIF]
.
The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 5-coordinate geometry to one O(1), one O(10), one O(11), one O(3), and one O(5) atom. 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 VO6 octahedra that share corners with two equivalent Ge(3)O4 tetrahedra, corners with three equivalent Ge(2)O4 tetrahedra, edges with two equivalent V(4)O6 octahedra, and  an edgeedge with one Ge(1)O5 square pyramid. 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 distorted VO6 octahedra that share corners with two equivalent Ge(1)O5 square pyramids,  a cornercorner with one Ge(3)O4 tetrahedra, corners with three equivalent Ge(4)O4 tetrahedra, and edges with two equivalent V(3)O6 octahedra. 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 distorted VO6 octahedra that share corners with three equivalent Ge(1)O5 square pyramids,  a cornercorner with one Ge(2)O4 tetrahedra, corners with two equivalent Ge(4)O4 tetrahedra, and edges with two equivalent V(2)O6 octahedra. 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 VO6 octahedra that share  a cornercorner with one Ge(4)O4 tetrahedra, corners with two equivalent Ge(2)O4 tetrahedra, corners with three equivalent Ge(3)O4 tetrahedra, and edges with two equivalent V(1)O6 octahedra. There are four inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to one O(14), one O(16), one O(6), one O(7), and one O(8) atom to form GeO5 square pyramids that share corners with two equivalent V(2)O6 octahedra, corners with three equivalent V(3)O6 octahedra,  a cornercorner with one Ge(2)O4 tetrahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 31-59°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(4), and one O(7) atom to form GeO4 tetrahedra that share  a cornercorner with one V(3)O6 octahedra, corners with two equivalent V(4)O6 octahedra, corners with three equivalent V(1)O6 octahedra, and  a cornercorner with one Ge(1)O5 square pyramid. The corner-sharing octahedral tilt angles range from 26-69°. In the third Ge site, Ge(3) is bonded to one O(1), one O(13), one O(2), and one O(5) atom to form GeO4 tetrahedra that share  a cornercorner with one V(2)O6 octahedra, corners with two equivalent V(1)O6 octahedra, and corners with three equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-60°. In the fourth Ge site, Ge(4) is bonded to one O(10), one O(11), one O(3), and one O(9) atom to form distorted GeO4 tetrahedra that share  a cornercorner with one V(4)O6 octahedra, corners with two equivalent V(3)O6 octahedra, and corners with three equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-59°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a trigonal planar geometry to one Mg(1), one V(4), and one Ge(3) atom. In the second O site, O(2) is bonded in a distorted trigonal planar 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 rectangular see-saw-like geometry to one Mg(1), one V(2), one V(3), and one Ge(4) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one V(1), one V(4), and one Ge(2) atom. In the fifth O site, O(5) is bonded in a trigonal non-coplanar geometry to one Mg(1), one V(2), and one Ge(3) atom. In the sixth O site, O(6) is bonded in a bent 150 degrees geometry to one V(3) and one Ge(1) atom. In the seventh O site, O(7) is bonded in a distorted trigonal planar 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 trigonal planar geometry to one V(2), one V(3), and one Ge(1) atom. In the ninth O site, O(9) is bonded in a 3-coordinate 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 non-coplanar geometry to one Mg(1), one V(4), and one Ge(4) atom. In the eleventh O site, O(11) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one V(2), and one Ge(4) atom. In the twelfth O site, O(12) is bonded in a bent 120 degrees geometry to one V(3) and one Ge(2) atom. In the thirteenth O site, O(13) is bonded in a distorted trigonal planar geometry to one V(1), one V(4), and one Ge(3) atom. In the fourteenth O site, O(14) is bonded in a 3-coordinate geometry to one V(2), one V(3), and one Ge(1) atom. In the fifteenth O site, O(15) is bonded in a distorted trigonal planar geometry to one V(1), one V(4), and one Ge(2) atom. In the sixteenth O site, O(16) is bonded in a water-like geometry to one V(1) and one Ge(1) atom. is represented by the CIF card [CIF]
data_MgV4(GeO4)4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.838
_cell_length_b   5.333
_cell_length_c   11.157
_cell_angle_alpha   94.719
_cell_angle_beta   90.943
_cell_angle_gamma   90.499
_symmetry_Int_Tables_number   1
_cell_volume   286.864
_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  0.496  0.269  0.235  1.0
  V  V1  1  0.956  0.782  0.577  1.0
  V  V2  1  0.517  0.743  0.067  1.0
  V  V3  1  0.466  0.244  0.917  1.0
  V  V4  1  0.990  0.262  0.435  1.0
  Ge  Ge5  1  0.021  0.753  0.843  1.0
  Ge  Ge6  1  0.447  0.370  0.646  1.0
  Ge  Ge7  1  0.432  0.797  0.371  1.0
  Ge  Ge8  1  0.950  0.201  0.129  1.0
  O  O9  1  0.287  0.086  0.344  1.0
  O  O10  1  0.225  0.613  0.466  1.0
  O  O11  1  0.285  0.123  0.082  1.0
  O  O12  1  0.207  0.131  0.578  1.0
  O  O13  1  0.404  0.623  0.228  1.0
  O  O14  1  0.222  0.042  0.845  1.0
  O  O15  1  0.207  0.612  0.699  1.0
  O  O16  1  0.244  0.566  0.944  1.0
  O  O17  1  0.732  0.392  0.037  1.0
  O  O18  1  0.897  0.379  0.274  1.0
  O  O19  1  0.751  0.954  0.179  1.0
  O  O20  1  0.648  0.336  0.779  1.0
  O  O21  1  0.750  0.917  0.448  1.0
  O  O22  1  0.748  0.886  0.944  1.0
  O  O23  1  0.721  0.452  0.543  1.0
  O  O24  1  0.790  0.844  0.712  1.0
[/CIF]
.