The structure described by MgNi(WO4)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form MgO6 octahedra that share edges with two equivalent Ni(1)O6 octahedra. W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. Ni(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form NiO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Ni(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgNi(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.009
_cell_length_b   5.547
_cell_length_c   6.161
_cell_angle_alpha   78.247
_cell_angle_beta   94.231
_cell_angle_gamma   113.949
_symmetry_Int_Tables_number   1
_cell_volume   153.154
_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  0.500  0.000  0.500  1.0
  Ni  Ni1  1  0.500  1.000  0.000  1.0
  W  W2  1  0.186  0.423  0.714  1.0
  W  W3  1  0.814  0.577  0.286  1.0
  O  O4  1  0.414  0.233  0.698  1.0
  O  O5  1  0.060  0.759  0.061  1.0
  O  O6  1  0.074  0.723  0.526  1.0
  O  O7  1  0.475  0.732  0.797  1.0
  O  O8  1  0.586  0.767  0.302  1.0
  O  O9  1  0.926  0.277  0.474  1.0
  O  O10  1  0.525  0.268  0.203  1.0
  O  O11  1  0.940  0.241  0.939  1.0
[/CIF]
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The structure described by MgNi(WO4)2 crystallizes in the triclinic P-1 space group. Mg(1) is bonded to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms to form MgO6 octahedra that share edges with two equivalent Ni(1)O6 octahedra. W(1) is bonded in a 5-coordinate geometry to one O(1), one O(2), one O(4), and two equivalent O(3) atoms. Ni(1) is bonded to two equivalent O(1), two equivalent O(2), and two equivalent O(4) atoms to form NiO6 octahedra that share edges with two equivalent Mg(1)O6 octahedra. There are four inequivalent O sites. In the first O site, O(1) is bonded in a distorted trigonal planar geometry to one Mg(1), one W(1), and one Ni(1) atom. In the second O site, O(2) is bonded in a bent 150 degrees geometry to one W(1) and one Ni(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1) and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded in a T-shaped geometry to one Mg(1), one W(1), and one Ni(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgNi(WO4)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.009
_cell_length_b   5.547
_cell_length_c   6.161
_cell_angle_alpha   78.247
_cell_angle_beta   94.231
_cell_angle_gamma   113.949
_symmetry_Int_Tables_number   1
_cell_volume   153.154
_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  0.500  0.000  0.500  1.0
  Ni  Ni1  1  0.500  1.000  0.000  1.0
  W  W2  1  0.186  0.423  0.714  1.0
  W  W3  1  0.814  0.577  0.286  1.0
  O  O4  1  0.414  0.233  0.698  1.0
  O  O5  1  0.060  0.759  0.061  1.0
  O  O6  1  0.074  0.723  0.526  1.0
  O  O7  1  0.475  0.732  0.797  1.0
  O  O8  1  0.586  0.767  0.302  1.0
  O  O9  1  0.926  0.277  0.474  1.0
  O  O10  1  0.525  0.268  0.203  1.0
  O  O11  1  0.940  0.241  0.939  1.0
[/CIF]
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