The material described by Mg(WO2)2 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(4), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. In the second W site, W(2) is bonded to one O(2), two equivalent O(4), and three equivalent O(1) atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1) and three equivalent W(2) atoms to form distorted OMg2W3 trigonal bipyramids that share  a cornercorner with one O(2)MgW3 tetrahedra, corners with two equivalent O(3)Mg2W3 trigonal bipyramids, corners with six equivalent O(4)Mg2W3 trigonal bipyramids, edges with two equivalent O(2)MgW3 tetrahedra,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(4)Mg2W3 trigonal bipyramids, and edges with four equivalent O(1)Mg2W3 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), one W(2), and two equivalent W(1) atoms to form OMgW3 tetrahedra that share corners with two equivalent O(2)MgW3 tetrahedra,  a cornercorner with one O(1)Mg2W3 trigonal bipyramid, corners with two equivalent O(4)Mg2W3 trigonal bipyramids, corners with six equivalent O(3)Mg2W3 trigonal bipyramids,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(1)Mg2W3 trigonal bipyramids, and edges with two equivalent O(4)Mg2W3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Mg(1) and three equivalent W(1) atoms to form distorted OMg2W3 trigonal bipyramids that share corners with six equivalent O(2)MgW3 tetrahedra, corners with two equivalent O(1)Mg2W3 trigonal bipyramids, corners with five equivalent O(4)Mg2W3 trigonal bipyramids,  an edgeedge with one O(2)MgW3 tetrahedra,  an edgeedge with one O(1)Mg2W3 trigonal bipyramid,  an edgeedge with one O(4)Mg2W3 trigonal bipyramid, and edges with four equivalent O(3)Mg2W3 trigonal bipyramids. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one W(1), and two equivalent W(2) atoms to form distorted OMg2W3 trigonal bipyramids that share corners with two equivalent O(2)MgW3 tetrahedra, corners with five equivalent O(3)Mg2W3 trigonal bipyramids, corners with six equivalent O(1)Mg2W3 trigonal bipyramids, edges with two equivalent O(2)MgW3 tetrahedra,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(1)Mg2W3 trigonal bipyramids, and edges with two equivalent O(4)Mg2W3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Mg(WO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.176
_cell_length_b   9.654
_cell_length_c   11.085
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.877
_cell_formula_units_Z   4
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  0.250  0.747  0.345  1.0
  Mg  Mg1  1  0.750  0.253  0.655  1.0
  Mg  Mg2  1  0.250  0.247  0.155  1.0
  Mg  Mg3  1  0.750  0.753  0.845  1.0
  W  W4  1  0.750  0.895  0.099  1.0
  W  W5  1  0.250  0.605  0.599  1.0
  W  W6  1  0.750  0.395  0.401  1.0
  W  W7  1  0.250  0.105  0.901  1.0
  W  W8  1  0.250  0.049  0.377  1.0
  W  W9  1  0.750  0.951  0.623  1.0
  W  W10  1  0.250  0.549  0.123  1.0
  W  W11  1  0.750  0.451  0.877  1.0
  O  O12  1  0.750  0.399  0.071  1.0
  O  O13  1  0.250  0.601  0.929  1.0
  O  O14  1  0.750  0.899  0.429  1.0
  O  O15  1  0.250  0.101  0.571  1.0
  O  O16  1  0.750  0.581  0.722  1.0
  O  O17  1  0.250  0.419  0.278  1.0
  O  O18  1  0.750  0.081  0.778  1.0
  O  O19  1  0.250  0.919  0.222  1.0
  O  O20  1  0.750  0.116  0.044  1.0
  O  O21  1  0.250  0.884  0.956  1.0
  O  O22  1  0.750  0.616  0.456  1.0
  O  O23  1  0.250  0.384  0.544  1.0
  O  O24  1  0.250  0.312  0.812  1.0
  O  O25  1  0.750  0.688  0.188  1.0
  O  O26  1  0.750  0.188  0.312  1.0
  O  O27  1  0.250  0.812  0.688  1.0
[/CIF]
.
The material described by Mg(WO2)2 crystallizes in the orthorhombic Pnma space group. Mg(1) is bonded in a 7-coordinate geometry to one O(2), two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(4), two equivalent O(2), and three equivalent O(3) atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. In the second W site, W(2) is bonded to one O(2), two equivalent O(4), and three equivalent O(1) atoms to form a mixture of edge and corner-sharing WO6 octahedra. The corner-sharing octahedral tilt angles range from 54-66°. There are four inequivalent O sites. In the first O site, O(1) is bonded to two equivalent Mg(1) and three equivalent W(2) atoms to form distorted OMg2W3 trigonal bipyramids that share  a cornercorner with one O(2)MgW3 tetrahedra, corners with two equivalent O(3)Mg2W3 trigonal bipyramids, corners with six equivalent O(4)Mg2W3 trigonal bipyramids, edges with two equivalent O(2)MgW3 tetrahedra,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(4)Mg2W3 trigonal bipyramids, and edges with four equivalent O(1)Mg2W3 trigonal bipyramids. In the second O site, O(2) is bonded to one Mg(1), one W(2), and two equivalent W(1) atoms to form OMgW3 tetrahedra that share corners with two equivalent O(2)MgW3 tetrahedra,  a cornercorner with one O(1)Mg2W3 trigonal bipyramid, corners with two equivalent O(4)Mg2W3 trigonal bipyramids, corners with six equivalent O(3)Mg2W3 trigonal bipyramids,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(1)Mg2W3 trigonal bipyramids, and edges with two equivalent O(4)Mg2W3 trigonal bipyramids. In the third O site, O(3) is bonded to two equivalent Mg(1) and three equivalent W(1) atoms to form distorted OMg2W3 trigonal bipyramids that share corners with six equivalent O(2)MgW3 tetrahedra, corners with two equivalent O(1)Mg2W3 trigonal bipyramids, corners with five equivalent O(4)Mg2W3 trigonal bipyramids,  an edgeedge with one O(2)MgW3 tetrahedra,  an edgeedge with one O(1)Mg2W3 trigonal bipyramid,  an edgeedge with one O(4)Mg2W3 trigonal bipyramid, and edges with four equivalent O(3)Mg2W3 trigonal bipyramids. In the fourth O site, O(4) is bonded to two equivalent Mg(1), one W(1), and two equivalent W(2) atoms to form distorted OMg2W3 trigonal bipyramids that share corners with two equivalent O(2)MgW3 tetrahedra, corners with five equivalent O(3)Mg2W3 trigonal bipyramids, corners with six equivalent O(1)Mg2W3 trigonal bipyramids, edges with two equivalent O(2)MgW3 tetrahedra,  an edgeedge with one O(3)Mg2W3 trigonal bipyramid, edges with two equivalent O(1)Mg2W3 trigonal bipyramids, and edges with two equivalent O(4)Mg2W3 trigonal bipyramids. is represented by the CIF file [CIF]
data_Mg(WO2)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.176
_cell_length_b   9.654
_cell_length_c   11.085
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   339.877
_cell_formula_units_Z   4
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  0.250  0.747  0.345  1.0
  Mg  Mg1  1  0.750  0.253  0.655  1.0
  Mg  Mg2  1  0.250  0.247  0.155  1.0
  Mg  Mg3  1  0.750  0.753  0.845  1.0
  W  W4  1  0.750  0.895  0.099  1.0
  W  W5  1  0.250  0.605  0.599  1.0
  W  W6  1  0.750  0.395  0.401  1.0
  W  W7  1  0.250  0.105  0.901  1.0
  W  W8  1  0.250  0.049  0.377  1.0
  W  W9  1  0.750  0.951  0.623  1.0
  W  W10  1  0.250  0.549  0.123  1.0
  W  W11  1  0.750  0.451  0.877  1.0
  O  O12  1  0.750  0.399  0.071  1.0
  O  O13  1  0.250  0.601  0.929  1.0
  O  O14  1  0.750  0.899  0.429  1.0
  O  O15  1  0.250  0.101  0.571  1.0
  O  O16  1  0.750  0.581  0.722  1.0
  O  O17  1  0.250  0.419  0.278  1.0
  O  O18  1  0.750  0.081  0.778  1.0
  O  O19  1  0.250  0.919  0.222  1.0
  O  O20  1  0.750  0.116  0.044  1.0
  O  O21  1  0.250  0.884  0.956  1.0
  O  O22  1  0.750  0.616  0.456  1.0
  O  O23  1  0.250  0.384  0.544  1.0
  O  O24  1  0.250  0.312  0.812  1.0
  O  O25  1  0.750  0.688  0.188  1.0
  O  O26  1  0.750  0.188  0.312  1.0
  O  O27  1  0.250  0.812  0.688  1.0
[/CIF]
.