The material described by Mg2WCrO6 is Corundum-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(12), one O(2), one O(3), one O(6), one O(8), and one O(9) atom to form distorted MgO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with three equivalent Mg(3)O6 octahedra, corners with three equivalent Mg(4)O6 pentagonal pyramids,  an edgeedge with one W(1)O6 octahedra, edges with two equivalent W(2)O6 octahedra, and  a faceface with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the second Mg site, Mg(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(7) atom. In the third Mg site, Mg(3) is bonded to one O(1), one O(11), one O(3), one O(6), one O(7), and one O(9) atom to form distorted MgO6 octahedra that share  a cornercorner with one W(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and  a faceface with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. In the fourth Mg site, Mg(4) is bonded to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(8) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and  a faceface with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form WO6 octahedra that share corners with two equivalent Mg(3)O6 octahedra, corners with three equivalent Cr(1)O6 octahedra, corners with three equivalent Cr(2)O6 octahedra,  a cornercorner with one Mg(4)O6 pentagonal pyramid,  an edgeedge with one Mg(1)O6 octahedra, and  a faceface with one Mg(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-61°. In the second W site, W(2) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with three equivalent Cr(1)O6 octahedra, corners with three equivalent Cr(2)O6 octahedra, corners with two equivalent Mg(4)O6 pentagonal pyramids, edges with two equivalent Mg(1)O6 octahedra, and  a faceface with one Mg(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-61°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(12), one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra,  an edgeedge with one Mg(4)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-62°. In the second Cr site, Cr(2) is bonded to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(8) atom to form CrO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  an edgeedge with one Mg(3)O6 octahedra, and edges with two equivalent Mg(4)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 39-61°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(2) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(1), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(2), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(2), and one Cr(1) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(1), and one Cr(1) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(2), and one Cr(2) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(2) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(1) atom. is represented by the CIF card [CIF]
data_Mg2CrWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.181
_cell_length_b   5.186
_cell_length_c   5.531
_cell_angle_alpha   62.332
_cell_angle_beta   62.116
_cell_angle_gamma   60.135
_symmetry_Int_Tables_number   1
_cell_volume   108.606
_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
  Cr  Cr0  1  0.498  0.481  0.525  1.0
  Mg  Mg1  1  0.294  0.274  0.146  1.0
  Mg  Mg2  1  0.790  0.774  0.646  1.0
  O  O3  1  0.109  0.708  0.809  1.0
  O  O4  1  0.718  0.364  0.810  1.0
  O  O5  1  0.378  0.097  0.807  1.0
  O  O6  1  0.884  0.199  0.306  1.0
  O  O7  1  0.613  0.867  0.309  1.0
  O  O8  1  0.213  0.597  0.310  1.0
  W  W9  1  0.997  0.981  0.027  1.0
[/CIF]
.
The material described by Mg2WCrO6 is Corundum-derived structured and crystallizes in the triclinic P1 space group. There are four inequivalent Mg sites. In the first Mg site, Mg(1) is bonded to one O(12), one O(2), one O(3), one O(6), one O(8), and one O(9) atom to form distorted MgO6 octahedra that share  a cornercorner with one Cr(2)O6 octahedra, corners with two equivalent Cr(1)O6 octahedra, corners with three equivalent Mg(3)O6 octahedra, corners with three equivalent Mg(4)O6 pentagonal pyramids,  an edgeedge with one W(1)O6 octahedra, edges with two equivalent W(2)O6 octahedra, and  a faceface with one Cr(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-62°. In the second Mg site, Mg(2) is bonded in a 6-coordinate geometry to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(7) atom. In the third Mg site, Mg(3) is bonded to one O(1), one O(11), one O(3), one O(6), one O(7), and one O(9) atom to form distorted MgO6 octahedra that share  a cornercorner with one W(2)O6 octahedra, corners with two equivalent W(1)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra,  an edgeedge with one Cr(2)O6 octahedra, edges with two equivalent Cr(1)O6 octahedra, and  a faceface with one W(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 54-61°. In the fourth Mg site, Mg(4) is bonded to one O(10), one O(12), one O(2), one O(4), one O(5), and one O(8) atom to form distorted MgO6 pentagonal pyramids that share  a cornercorner with one W(1)O6 octahedra, corners with two equivalent W(2)O6 octahedra, corners with three equivalent Mg(1)O6 octahedra,  an edgeedge with one Cr(1)O6 octahedra, edges with two equivalent Cr(2)O6 octahedra, and  a faceface with one W(2)O6 octahedra. The corner-sharing octahedral tilt angles range from 53-62°. There are two inequivalent W sites. In the first W site, W(1) is bonded to one O(1), one O(11), one O(3), one O(5), one O(7), and one O(9) atom to form WO6 octahedra that share corners with two equivalent Mg(3)O6 octahedra, corners with three equivalent Cr(1)O6 octahedra, corners with three equivalent Cr(2)O6 octahedra,  a cornercorner with one Mg(4)O6 pentagonal pyramid,  an edgeedge with one Mg(1)O6 octahedra, and  a faceface with one Mg(3)O6 octahedra. The corner-sharing octahedral tilt angles range from 39-61°. In the second W site, W(2) is bonded to one O(10), one O(12), one O(2), one O(4), one O(6), and one O(8) atom to form WO6 octahedra that share  a cornercorner with one Mg(3)O6 octahedra, corners with three equivalent Cr(1)O6 octahedra, corners with three equivalent Cr(2)O6 octahedra, corners with two equivalent Mg(4)O6 pentagonal pyramids, edges with two equivalent Mg(1)O6 octahedra, and  a faceface with one Mg(4)O6 pentagonal pyramid. The corner-sharing octahedral tilt angles range from 40-61°. There are two inequivalent Cr sites. In the first Cr site, Cr(1) is bonded to one O(12), one O(2), one O(3), one O(6), one O(7), and one O(9) atom to form CrO6 octahedra that share corners with two equivalent Mg(1)O6 octahedra, corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra, edges with two equivalent Mg(3)O6 octahedra,  an edgeedge with one Mg(4)O6 pentagonal pyramid, and  a faceface with one Mg(1)O6 octahedra. The corner-sharing octahedral tilt angles range from 40-62°. In the second Cr site, Cr(2) is bonded to one O(1), one O(10), one O(11), one O(4), one O(5), and one O(8) atom to form CrO6 octahedra that share  a cornercorner with one Mg(1)O6 octahedra, corners with three equivalent W(1)O6 octahedra, corners with three equivalent W(2)O6 octahedra,  an edgeedge with one Mg(3)O6 octahedra, and edges with two equivalent Mg(4)O6 pentagonal pyramids. The corner-sharing octahedral tilt angles range from 39-61°. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(2) atom. In the second O site, O(2) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(1) atom. In the third O site, O(3) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(1), and one Cr(1) atom. In the fourth O site, O(4) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(2), and one Cr(2) atom. In the fifth O site, O(5) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(1), and one Cr(2) atom. In the sixth O site, O(6) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(2), and one Cr(1) atom. In the seventh O site, O(7) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(1) atom. In the eighth O site, O(8) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(2) atom. In the ninth O site, O(9) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(3), one W(1), and one Cr(1) atom. In the tenth O site, O(10) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(4), one W(2), and one Cr(2) atom. In the eleventh O site, O(11) is bonded in a distorted see-saw-like geometry to one Mg(2), one Mg(3), one W(1), and one Cr(2) atom. In the twelfth O site, O(12) is bonded in a distorted see-saw-like geometry to one Mg(1), one Mg(4), one W(2), and one Cr(1) atom. is represented by the CIF card [CIF]
data_Mg2CrWO6
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.181
_cell_length_b   5.186
_cell_length_c   5.531
_cell_angle_alpha   62.332
_cell_angle_beta   62.116
_cell_angle_gamma   60.135
_symmetry_Int_Tables_number   1
_cell_volume   108.606
_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
  Cr  Cr0  1  0.498  0.481  0.525  1.0
  Mg  Mg1  1  0.294  0.274  0.146  1.0
  Mg  Mg2  1  0.790  0.774  0.646  1.0
  O  O3  1  0.109  0.708  0.809  1.0
  O  O4  1  0.718  0.364  0.810  1.0
  O  O5  1  0.378  0.097  0.807  1.0
  O  O6  1  0.884  0.199  0.306  1.0
  O  O7  1  0.613  0.867  0.309  1.0
  O  O8  1  0.213  0.597  0.310  1.0
  W  W9  1  0.997  0.981  0.027  1.0
[/CIF]
.