The compound described by Mg2WSnO6 crystallizes in the triclinic P1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent Mg(2)O5 trigonal bipyramids, edges with two equivalent W(1)O6 octahedra, and  an edgeedge with one Mg(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 48°. In the second Mg site, Mg(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, edges with two equivalent W(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 36°. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Mg(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O5 trigonal bipyramids, and edges with two equivalent Mg(2)O5 trigonal bipyramids. Sn(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(2), one W(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Mg(2), and one W(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mg(2), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Mg(2), and one W(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(2), one W(1), and one Sn(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mg(1), one W(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Mg2SnWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.242
_cell_length_b   5.706
_cell_length_c   5.716
_cell_angle_alpha   73.235
_cell_angle_beta   66.733
_cell_angle_gamma   67.508
_symmetry_Int_Tables_number   1
_cell_volume   143.204
_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  0.733  0.944  0.668  1.0
  Mg  Mg1  1  0.259  0.352  0.033  1.0
  Sn  Sn2  1  0.519  0.530  0.436  1.0
  W  W3  1  1.000  0.942  0.057  1.0
  O  O4  1  0.958  0.161  0.298  1.0
  O  O5  1  0.015  0.697  0.864  1.0
  O  O6  1  0.288  0.090  0.818  1.0
  O  O7  1  0.696  0.165  0.929  1.0
  O  O8  1  0.322  0.633  0.148  1.0
  O  O9  1  0.729  0.803  0.384  1.0
[/CIF]
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The compound described by Mg2WSnO6 crystallizes in the triclinic P1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(6) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent Mg(2)O5 trigonal bipyramids, edges with two equivalent W(1)O6 octahedra, and  an edgeedge with one Mg(2)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 48°. In the second Mg site, Mg(2) is bonded to one O(1), one O(2), one O(3), one O(4), and one O(5) atom to form distorted MgO5 trigonal bipyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent Mg(1)O5 trigonal bipyramids, edges with two equivalent W(1)O6 octahedra, and  an edgeedge with one Mg(1)O5 trigonal bipyramid. The corner-sharing octahedral tilt angles are 36°. W(1) is bonded to one O(1), one O(2), one O(3), one O(4), one O(5), and one O(6) atom to form WO6 octahedra that share  a cornercorner with one Mg(1)O5 trigonal bipyramid,  a cornercorner with one Mg(2)O5 trigonal bipyramid, edges with two equivalent Mg(1)O5 trigonal bipyramids, and edges with two equivalent Mg(2)O5 trigonal bipyramids. Sn(1) is bonded in a distorted trigonal non-coplanar geometry to one O(1), one O(5), and one O(6) atom. There are six inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(2), one W(1), and one Sn(1) atom. In the second O site, O(2) is bonded in a distorted T-shaped geometry to one Mg(1), one Mg(2), and one W(1) atom. In the third O site, O(3) is bonded in a distorted trigonal non-coplanar geometry to one Mg(1), one Mg(2), and one W(1) atom. In the fourth O site, O(4) is bonded in a distorted T-shaped geometry to one Mg(1), one Mg(2), and one W(1) atom. In the fifth O site, O(5) is bonded in a trigonal planar geometry to one Mg(2), one W(1), and one Sn(1) atom. In the sixth O site, O(6) is bonded in a trigonal planar geometry to one Mg(1), one W(1), and one Sn(1) atom. is represented by the CIF file [CIF]
data_Mg2SnWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.242
_cell_length_b   5.706
_cell_length_c   5.716
_cell_angle_alpha   73.235
_cell_angle_beta   66.733
_cell_angle_gamma   67.508
_symmetry_Int_Tables_number   1
_cell_volume   143.204
_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  0.733  0.944  0.668  1.0
  Mg  Mg1  1  0.259  0.352  0.033  1.0
  Sn  Sn2  1  0.519  0.530  0.436  1.0
  W  W3  1  1.000  0.942  0.057  1.0
  O  O4  1  0.958  0.161  0.298  1.0
  O  O5  1  0.015  0.697  0.864  1.0
  O  O6  1  0.288  0.090  0.818  1.0
  O  O7  1  0.696  0.165  0.929  1.0
  O  O8  1  0.322  0.633  0.148  1.0
  O  O9  1  0.729  0.803  0.384  1.0
[/CIF]
.