The material structure described by MgCr(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(6) atom. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Cr(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. Cr(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CrO6 octahedra that share  a cornercorner with one W(2)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one W(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mg(1), one W(1), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(2), and one Cr(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one W(2) and one Cr(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mg(1) and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(2), and one Cr(1) atom. is represented by the CIF card [CIF]
data_MgCr(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   7.685
_cell_length_c   6.287
_cell_angle_alpha   108.096
_cell_angle_beta   124.933
_cell_angle_gamma   86.322
_symmetry_Int_Tables_number   1
_cell_volume   186.310
_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  0.240  0.631  0.505  1.0
  Cr  Cr1  1  0.114  0.214  0.094  1.0
  W  W2  1  0.863  0.356  0.599  1.0
  W  W3  1  0.379  0.077  0.593  1.0
  O  O4  1  0.103  0.577  0.713  1.0
  O  O5  1  0.433  0.445  0.366  1.0
  O  O6  1  0.213  0.195  0.815  1.0
  O  O7  1  0.492  0.098  0.353  1.0
  O  O8  1  0.754  0.996  0.835  1.0
  O  O9  1  0.128  0.851  0.404  1.0
  O  O10  1  0.021  0.226  0.367  1.0
  O  O11  1  0.744  0.337  0.847  1.0
[/CIF]
.
The material structure described by MgCr(WO4)2 crystallizes in the triclinic P1 space group. Mg(1) is bonded in a trigonal planar geometry to one O(1), one O(2), and one O(6) atom. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 6-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(7), and one O(8) atom. In the second W site, W(2) is bonded to one O(3), one O(4), one O(5), one O(6), one O(7), and one O(8) atom to form distorted WO6 octahedra that share  a cornercorner with one Cr(1)O6 octahedra and edges with two equivalent Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. Cr(1) is bonded to one O(2), one O(3), one O(4), one O(5), one O(7), and one O(8) atom to form CrO6 octahedra that share  a cornercorner with one W(2)O6 octahedra and edges with two equivalent W(2)O6 octahedra. The corner-sharing octahedral tilt angles are 26°. There are eight inequivalent O sites. In the first O site, O(1) is bonded in a bent 120 degrees geometry to one Mg(1) and one W(1) atom. In the second O site, O(2) is bonded in a trigonal non-coplanar geometry to one Mg(1), one W(1), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(2), and one Cr(1) atom. In the fifth O site, O(5) is bonded in a water-like geometry to one W(2) and one Cr(1) atom. In the sixth O site, O(6) is bonded in a bent 120 degrees geometry to one Mg(1) and one W(2) atom. In the seventh O site, O(7) is bonded in a distorted T-shaped geometry to one W(1), one W(2), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted trigonal non-coplanar geometry to one W(1), one W(2), and one Cr(1) atom. is represented by the CIF card [CIF]
data_MgCr(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.002
_cell_length_b   7.685
_cell_length_c   6.287
_cell_angle_alpha   108.096
_cell_angle_beta   124.933
_cell_angle_gamma   86.322
_symmetry_Int_Tables_number   1
_cell_volume   186.310
_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  0.240  0.631  0.505  1.0
  Cr  Cr1  1  0.114  0.214  0.094  1.0
  W  W2  1  0.863  0.356  0.599  1.0
  W  W3  1  0.379  0.077  0.593  1.0
  O  O4  1  0.103  0.577  0.713  1.0
  O  O5  1  0.433  0.445  0.366  1.0
  O  O6  1  0.213  0.195  0.815  1.0
  O  O7  1  0.492  0.098  0.353  1.0
  O  O8  1  0.754  0.996  0.835  1.0
  O  O9  1  0.128  0.851  0.404  1.0
  O  O10  1  0.021  0.226  0.367  1.0
  O  O11  1  0.744  0.337  0.847  1.0
[/CIF]
.