The compound described by Mg2WNiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. W(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ni(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one W(1), and one Ni(1) atom to form corner-sharing OMg2NiW trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), 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 two equivalent Mg(1) and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2NiWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.220
_cell_length_b   5.012
_cell_length_c   9.627
_cell_angle_alpha   59.566
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   217.165
_cell_formula_units_Z   2
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  0.055  0.294  0.735  1.0
  Mg  Mg1  1  0.555  0.706  0.765  1.0
  Mg  Mg2  1  0.945  0.706  0.265  1.0
  Mg  Mg3  1  0.445  0.294  0.235  1.0
  Ni  Ni4  1  0.000  0.500  0.000  1.0
  Ni  Ni5  1  0.500  0.500  0.500  1.0
  W  W6  1  0.000  0.000  0.500  1.0
  W  W7  1  0.500  0.000  0.000  1.0
  O  O8  1  0.293  0.707  0.602  1.0
  O  O9  1  0.793  0.293  0.898  1.0
  O  O10  1  0.707  0.293  0.398  1.0
  O  O11  1  0.207  0.707  0.102  1.0
  O  O12  1  0.199  0.365  0.443  1.0
  O  O13  1  0.699  0.635  0.057  1.0
  O  O14  1  0.801  0.635  0.557  1.0
  O  O15  1  0.301  0.365  0.943  1.0
  O  O16  1  0.404  0.051  0.793  1.0
  O  O17  1  0.904  0.949  0.707  1.0
  O  O18  1  0.096  0.051  0.293  1.0
  O  O19  1  0.596  0.949  0.207  1.0
[/CIF]
.
The compound described by Mg2WNiO6 crystallizes in the monoclinic P2_1/c space group. Mg(1) is bonded in a 5-coordinate geometry to one O(2), two equivalent O(1), and two equivalent O(3) atoms. W(1) is bonded in an octahedral geometry to two equivalent O(1), two equivalent O(2), and two equivalent O(3) atoms. Ni(1) is bonded in a distorted square co-planar geometry to two equivalent O(1) and two equivalent O(2) atoms. There are three inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1), one W(1), and one Ni(1) atom to form corner-sharing OMg2NiW trigonal pyramids. In the second O site, O(2) is bonded in a 3-coordinate geometry to one Mg(1), 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 two equivalent Mg(1) and one W(1) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Mg2NiWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.220
_cell_length_b   5.012
_cell_length_c   9.627
_cell_angle_alpha   59.566
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   217.165
_cell_formula_units_Z   2
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  0.055  0.294  0.735  1.0
  Mg  Mg1  1  0.555  0.706  0.765  1.0
  Mg  Mg2  1  0.945  0.706  0.265  1.0
  Mg  Mg3  1  0.445  0.294  0.235  1.0
  Ni  Ni4  1  0.000  0.500  0.000  1.0
  Ni  Ni5  1  0.500  0.500  0.500  1.0
  W  W6  1  0.000  0.000  0.500  1.0
  W  W7  1  0.500  0.000  0.000  1.0
  O  O8  1  0.293  0.707  0.602  1.0
  O  O9  1  0.793  0.293  0.898  1.0
  O  O10  1  0.707  0.293  0.398  1.0
  O  O11  1  0.207  0.707  0.102  1.0
  O  O12  1  0.199  0.365  0.443  1.0
  O  O13  1  0.699  0.635  0.057  1.0
  O  O14  1  0.801  0.635  0.557  1.0
  O  O15  1  0.301  0.365  0.943  1.0
  O  O16  1  0.404  0.051  0.793  1.0
  O  O17  1  0.904  0.949  0.707  1.0
  O  O18  1  0.096  0.051  0.293  1.0
  O  O19  1  0.596  0.949  0.207  1.0
[/CIF]
.