The crystal structure described by MgGe4(MoO6)2 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form MoO6 octahedra that share corners with two equivalent Ge(2)O4 tetrahedra and edges with two equivalent Mo(2)O6 octahedra. In the second Mo site, Mo(2) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form MoO6 octahedra that share corners with four equivalent Ge(2)O4 tetrahedra and edges with two equivalent Mo(1)O6 octahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. In the second Ge site, Ge(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Mo(1)O6 octahedra and corners with two equivalent Mo(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Ge(1), and one Ge(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mo(2) and one Ge(2) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mo(1), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Ge(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgGe4(MoO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.612
_cell_length_b   7.201
_cell_length_c   7.201
_cell_angle_alpha   79.561
_cell_angle_beta   76.316
_cell_angle_gamma   76.315
_symmetry_Int_Tables_number   1
_cell_volume   272.286
_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  0.750  0.580  0.420  1.0
  Ge  Ge1  1  0.754  0.368  0.164  1.0
  Ge  Ge2  1  0.746  0.836  0.632  1.0
  Ge  Ge3  1  0.238  0.631  0.814  1.0
  Ge  Ge4  1  0.262  0.186  0.369  1.0
  Mo  Mo5  1  0.750  0.916  0.084  1.0
  Mo  Mo6  1  0.250  0.110  0.890  1.0
  O  O7  1  0.476  0.344  0.339  1.0
  O  O8  1  0.024  0.661  0.656  1.0
  O  O9  1  0.543  0.657  0.668  1.0
  O  O10  1  0.957  0.332  0.343  1.0
  O  O11  1  0.228  0.077  0.606  1.0
  O  O12  1  0.272  0.394  0.923  1.0
  O  O13  1  0.795  0.862  0.380  1.0
  O  O14  1  0.705  0.620  0.138  1.0
  O  O15  1  0.853  0.196  0.006  1.0
  O  O16  1  0.647  0.994  0.804  1.0
  O  O17  1  0.143  0.822  0.957  1.0
  O  O18  1  0.357  0.043  0.178  1.0
[/CIF]
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The crystal structure described by MgGe4(MoO6)2 crystallizes in the monoclinic C2 space group. Mg(1) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(4) atoms. There are two inequivalent Mo sites. In the first Mo site, Mo(1) is bonded to two equivalent O(4), two equivalent O(5), and two equivalent O(6) atoms to form MoO6 octahedra that share corners with two equivalent Ge(2)O4 tetrahedra and edges with two equivalent Mo(2)O6 octahedra. In the second Mo site, Mo(2) is bonded to two equivalent O(3), two equivalent O(5), and two equivalent O(6) atoms to form MoO6 octahedra that share corners with four equivalent Ge(2)O4 tetrahedra and edges with two equivalent Mo(1)O6 octahedra. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded in a rectangular see-saw-like geometry to one O(1), one O(2), one O(4), and one O(5) atom. In the second Ge site, Ge(2) is bonded to one O(1), one O(2), one O(3), and one O(6) atom to form GeO4 tetrahedra that share  a cornercorner with one Mo(1)O6 octahedra and corners with two equivalent Mo(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 36-60°. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted bent 120 degrees geometry to one Ge(1) and one Ge(2) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Ge(1), and one Ge(2) atom. In the third O site, O(3) is bonded in a bent 150 degrees geometry to one Mo(2) and one Ge(2) atom. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one Mo(1), and one Ge(1) atom. In the fifth O site, O(5) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Ge(1) atom. In the sixth O site, O(6) is bonded in a distorted trigonal planar geometry to one Mo(1), one Mo(2), and one Ge(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgGe4(MoO6)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.612
_cell_length_b   7.201
_cell_length_c   7.201
_cell_angle_alpha   79.561
_cell_angle_beta   76.316
_cell_angle_gamma   76.315
_symmetry_Int_Tables_number   1
_cell_volume   272.286
_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  0.750  0.580  0.420  1.0
  Ge  Ge1  1  0.754  0.368  0.164  1.0
  Ge  Ge2  1  0.746  0.836  0.632  1.0
  Ge  Ge3  1  0.238  0.631  0.814  1.0
  Ge  Ge4  1  0.262  0.186  0.369  1.0
  Mo  Mo5  1  0.750  0.916  0.084  1.0
  Mo  Mo6  1  0.250  0.110  0.890  1.0
  O  O7  1  0.476  0.344  0.339  1.0
  O  O8  1  0.024  0.661  0.656  1.0
  O  O9  1  0.543  0.657  0.668  1.0
  O  O10  1  0.957  0.332  0.343  1.0
  O  O11  1  0.228  0.077  0.606  1.0
  O  O12  1  0.272  0.394  0.923  1.0
  O  O13  1  0.795  0.862  0.380  1.0
  O  O14  1  0.705  0.620  0.138  1.0
  O  O15  1  0.853  0.196  0.006  1.0
  O  O16  1  0.647  0.994  0.804  1.0
  O  O17  1  0.143  0.822  0.957  1.0
  O  O18  1  0.357  0.043  0.178  1.0
[/CIF]
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