The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) 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 MgO6 octahedra that share corners with two equivalent Ge(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, edges with two equivalent Ge(3)O6 octahedra, and faces with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. 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)O6 octahedra, corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Ge(2)O6 octahedra,  an edgeedge with one Ge(1)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. 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 47-53°. 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,  an edgeedge with one Ge(2)O6 octahedra, and edges with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. 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 corners with two equivalent Ge(2)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra,  an edgeedge with one Ge(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. 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 corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(3)O6 octahedra, corners with four equivalent Ge(2)O6 octahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-51°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(16), one O(4), one O(6), and one O(7) atom to form GeO6 octahedra that share corners with two equivalent V(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. 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 corners with two equivalent V(1)O6 octahedra, corners with four equivalent V(4)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. 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 Mg(1)O6 octahedra, 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)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one V(4), one Ge(3), and one Ge(4) atom. In the second O site, O(2) 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 third O site, O(3) is bonded in a distorted T-shaped 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 rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(2) 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 distorted trigonal planar 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 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 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 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 distorted rectangular see-saw-like geometry to one Mg(1), 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 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 distorted trigonal planar geometry to 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   4.548
_cell_length_b   4.768
_cell_length_c   11.567
_cell_angle_alpha   89.983
_cell_angle_beta   90.138
_cell_angle_gamma   89.468
_symmetry_Int_Tables_number   1
_cell_volume   250.859
_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  0.501  0.244  0.435  1.0
  V  V1  1  0.009  0.745  0.569  1.0
  V  V2  1  0.498  0.752  0.066  1.0
  V  V3  1  0.497  0.252  0.932  1.0
  V  V4  1  0.001  0.258  0.437  1.0
  Ge  Ge5  1  0.996  0.753  0.821  1.0
  Ge  Ge6  1  0.504  0.242  0.688  1.0
  Ge  Ge7  1  0.504  0.749  0.310  1.0
  Ge  Ge8  1  0.998  0.252  0.176  1.0
  O  O9  1  0.233  0.087  0.308  1.0
  O  O10  1  0.264  0.587  0.428  1.0
  O  O11  1  0.249  0.078  0.063  1.0
  O  O12  1  0.267  0.088  0.565  1.0
  O  O13  1  0.269  0.584  0.188  1.0
  O  O14  1  0.274  0.082  0.812  1.0
  O  O15  1  0.219  0.577  0.696  1.0
  O  O16  1  0.248  0.579  0.940  1.0
  O  O17  1  0.748  0.426  0.063  1.0
  O  O18  1  0.759  0.415  0.306  1.0
  O  O19  1  0.728  0.920  0.189  1.0
  O  O20  1  0.721  0.419  0.812  1.0
  O  O21  1  0.750  0.910  0.431  1.0
  O  O22  1  0.748  0.925  0.940  1.0
  O  O23  1  0.740  0.405  0.564  1.0
  O  O24  1  0.774  0.921  0.697  1.0
[/CIF]
.
The crystal structure described by MgV4(GeO4)4 crystallizes in the triclinic P1 space group. Mg(1) 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 MgO6 octahedra that share corners with two equivalent Ge(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra,  an edgeedge with one Ge(2)O6 octahedra, edges with two equivalent Ge(3)O6 octahedra, and faces with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 45-56°. 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)O6 octahedra, corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent Ge(2)O6 octahedra,  an edgeedge with one Ge(1)O6 octahedra, and edges with two equivalent V(4)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-56°. 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 47-53°. 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,  an edgeedge with one Ge(2)O6 octahedra, and edges with two equivalent V(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 49-51°. 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 corners with two equivalent Ge(2)O6 octahedra, corners with four equivalent Ge(3)O6 octahedra,  an edgeedge with one Ge(4)O6 octahedra, edges with two equivalent V(1)O6 octahedra, and faces with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. 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 corners with two equivalent V(2)O6 octahedra, corners with four equivalent V(3)O6 octahedra, corners with four equivalent Ge(2)O6 octahedra, and  an edgeedge with one V(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 46-51°. In the second Ge site, Ge(2) is bonded to one O(12), one O(15), one O(16), one O(4), one O(6), and one O(7) atom to form GeO6 octahedra that share corners with two equivalent V(4)O6 octahedra, corners with four equivalent V(1)O6 octahedra, corners with four equivalent Ge(1)O6 octahedra,  an edgeedge with one Mg(1)O6 octahedra, and  an edgeedge with one V(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-54°. 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 corners with two equivalent V(1)O6 octahedra, corners with four equivalent V(4)O6 octahedra, corners with four equivalent Ge(4)O6 octahedra,  an edgeedge with one V(2)O6 octahedra, and edges with two equivalent Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. 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 Mg(1)O6 octahedra, 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)O6 octahedra. The corner-sharing octahedral tilt angles range from 44-53°. There are sixteen inequivalent O sites. In the first O site, O(1) is bonded in a distorted rectangular see-saw-like geometry to one Mg(1), one V(4), one Ge(3), and one Ge(4) atom. In the second O site, O(2) 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 third O site, O(3) is bonded in a distorted T-shaped 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 rectangular see-saw-like geometry to one Mg(1), one V(1), one V(4), and one Ge(2) 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 distorted trigonal planar 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 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 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 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 distorted rectangular see-saw-like geometry to one Mg(1), 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 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 distorted trigonal planar geometry to 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   4.548
_cell_length_b   4.768
_cell_length_c   11.567
_cell_angle_alpha   89.983
_cell_angle_beta   90.138
_cell_angle_gamma   89.468
_symmetry_Int_Tables_number   1
_cell_volume   250.859
_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  0.501  0.244  0.435  1.0
  V  V1  1  0.009  0.745  0.569  1.0
  V  V2  1  0.498  0.752  0.066  1.0
  V  V3  1  0.497  0.252  0.932  1.0
  V  V4  1  0.001  0.258  0.437  1.0
  Ge  Ge5  1  0.996  0.753  0.821  1.0
  Ge  Ge6  1  0.504  0.242  0.688  1.0
  Ge  Ge7  1  0.504  0.749  0.310  1.0
  Ge  Ge8  1  0.998  0.252  0.176  1.0
  O  O9  1  0.233  0.087  0.308  1.0
  O  O10  1  0.264  0.587  0.428  1.0
  O  O11  1  0.249  0.078  0.063  1.0
  O  O12  1  0.267  0.088  0.565  1.0
  O  O13  1  0.269  0.584  0.188  1.0
  O  O14  1  0.274  0.082  0.812  1.0
  O  O15  1  0.219  0.577  0.696  1.0
  O  O16  1  0.248  0.579  0.940  1.0
  O  O17  1  0.748  0.426  0.063  1.0
  O  O18  1  0.759  0.415  0.306  1.0
  O  O19  1  0.728  0.920  0.189  1.0
  O  O20  1  0.721  0.419  0.812  1.0
  O  O21  1  0.750  0.910  0.431  1.0
  O  O22  1  0.748  0.925  0.940  1.0
  O  O23  1  0.740  0.405  0.564  1.0
  O  O24  1  0.774  0.921  0.697  1.0
[/CIF]
.