The structure described by MgGe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Ge(1) atom. In the second O site, O(2) is bonded to one Mg(1), one W(1), one W(2), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OMgGeW2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_MgGe2(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.283
_cell_length_b   6.343
_cell_length_c   5.221
_cell_angle_alpha   90.000
_cell_angle_beta   87.288
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.756
_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  0.000  0.596  0.250  1.0
  Ge  Ge1  1  0.500  0.351  0.750  1.0
  Ge  Ge2  1  0.500  0.727  0.250  1.0
  W  W3  1  0.000  0.854  0.750  1.0
  W  W4  1  0.000  0.146  0.250  1.0
  O  O5  1  0.196  0.092  0.556  1.0
  O  O6  1  0.206  0.880  0.073  1.0
  O  O7  1  0.213  0.641  0.578  1.0
  O  O8  1  0.226  0.363  0.104  1.0
  O  O9  1  0.787  0.641  0.922  1.0
  O  O10  1  0.774  0.363  0.396  1.0
  O  O11  1  0.804  0.092  0.944  1.0
  O  O12  1  0.794  0.880  0.427  1.0
[/CIF]
.
The structure described by MgGe2(WO4)2 crystallizes in the monoclinic P2 space group. Mg(1) is bonded to two equivalent O(2), two equivalent O(3), and two equivalent O(4) atoms to form distorted MgO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent W(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. There are two inequivalent W sites. In the first W site, W(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-54°. In the second W site, W(2) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form WO6 octahedra that share corners with four equivalent Ge(1)O6 octahedra, edges with two equivalent Mg(1)O6 octahedra, and edges with two equivalent W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 50-55°. There are two inequivalent Ge sites. In the first Ge site, Ge(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form distorted GeO6 octahedra that share corners with four equivalent Mg(1)O6 octahedra, corners with four equivalent W(1)O6 octahedra, and corners with four equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 48-58°. In the second Ge site, Ge(2) is bonded in a 4-coordinate geometry to two equivalent O(2) and two equivalent O(3) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one W(1), one W(2), and one Ge(1) atom. In the second O site, O(2) is bonded to one Mg(1), one W(1), one W(2), and one Ge(2) atom to form a mixture of distorted corner and edge-sharing OMgGeW2 trigonal pyramids. In the third O site, O(3) is bonded in a 4-coordinate geometry to one Mg(1), one W(1), one Ge(1), and one Ge(2) atom. In the fourth O site, O(4) is bonded in a 3-coordinate geometry to one Mg(1), one W(2), and one Ge(1) atom. is represented by the CIF card [CIF]
data_MgGe2(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.283
_cell_length_b   6.343
_cell_length_c   5.221
_cell_angle_alpha   90.000
_cell_angle_beta   87.288
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   174.756
_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  0.000  0.596  0.250  1.0
  Ge  Ge1  1  0.500  0.351  0.750  1.0
  Ge  Ge2  1  0.500  0.727  0.250  1.0
  W  W3  1  0.000  0.854  0.750  1.0
  W  W4  1  0.000  0.146  0.250  1.0
  O  O5  1  0.196  0.092  0.556  1.0
  O  O6  1  0.206  0.880  0.073  1.0
  O  O7  1  0.213  0.641  0.578  1.0
  O  O8  1  0.226  0.363  0.104  1.0
  O  O9  1  0.787  0.641  0.922  1.0
  O  O10  1  0.774  0.363  0.396  1.0
  O  O11  1  0.804  0.092  0.944  1.0
  O  O12  1  0.794  0.880  0.427  1.0
[/CIF]
.