The crystal structure described by MgWO2 crystallizes in the triclinic P-1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the second Mg site, Mg(2) is bonded to one O(3), two equivalent O(2), and two equivalent O(4) atoms to form distorted edge-sharing MgO5 trigonal bipyramids. There are two inequivalent W sites. In the first W site, W(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second W site, W(2) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one W(2), and two equivalent W(1) atoms. In the second O site, O(2) is bonded to two equivalent Mg(2) and two equivalent W(2) atoms to form distorted OMg2W2 trigonal pyramids that share corners with four equivalent O(4)Mg4W square pyramids,  an edgeedge with one O(4)Mg4W square pyramid, and edges with two equivalent O(2)Mg2W2 trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(2), two equivalent Mg(1), and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), and one W(2) atom to form OMg4W square pyramids that share corners with four equivalent O(2)Mg2W2 trigonal pyramids, edges with two equivalent O(4)Mg4W square pyramids, and  an edgeedge with one O(2)Mg2W2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgWO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.874
_cell_length_b   8.615
_cell_length_c   8.621
_cell_angle_alpha   98.087
_cell_angle_beta   97.859
_cell_angle_gamma   89.939
_symmetry_Int_Tables_number   1
_cell_volume   209.330
_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  0.191  0.086  0.306  1.0
  Mg  Mg1  1  0.809  0.914  0.694  1.0
  Mg  Mg2  1  0.681  0.737  0.369  1.0
  Mg  Mg3  1  0.319  0.263  0.631  1.0
  W  W4  1  0.947  0.156  0.971  1.0
  W  W5  1  0.686  0.414  0.361  1.0
  W  W6  1  0.314  0.586  0.639  1.0
  W  W7  1  0.053  0.844  0.029  1.0
  O  O8  1  0.473  0.772  0.843  1.0
  O  O9  1  0.855  0.430  0.730  1.0
  O  O10  1  0.145  0.570  0.270  1.0
  O  O11  1  0.527  0.228  0.157  1.0
  O  O12  1  0.364  0.096  0.771  1.0
  O  O13  1  0.751  0.190  0.462  1.0
  O  O14  1  0.636  0.904  0.229  1.0
  O  O15  1  0.249  0.810  0.538  1.0
[/CIF]
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The crystal structure described by MgWO2 crystallizes in the triclinic P-1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a 6-coordinate geometry to two equivalent O(1), two equivalent O(3), and two equivalent O(4) atoms. In the second Mg site, Mg(2) is bonded to one O(3), two equivalent O(2), and two equivalent O(4) atoms to form distorted edge-sharing MgO5 trigonal bipyramids. There are two inequivalent W sites. In the first W site, W(1) is bonded in a square co-planar geometry to two equivalent O(1) and two equivalent O(3) atoms. In the second W site, W(2) is bonded in a 4-coordinate geometry to one O(1), one O(4), and two equivalent O(2) atoms. There are four inequivalent O sites. In the first O site, O(1) is bonded in a 5-coordinate geometry to two equivalent Mg(1), one W(2), and two equivalent W(1) atoms. In the second O site, O(2) is bonded to two equivalent Mg(2) and two equivalent W(2) atoms to form distorted OMg2W2 trigonal pyramids that share corners with four equivalent O(4)Mg4W square pyramids,  an edgeedge with one O(4)Mg4W square pyramid, and edges with two equivalent O(2)Mg2W2 trigonal pyramids. In the third O site, O(3) is bonded in a 5-coordinate geometry to one Mg(2), two equivalent Mg(1), and two equivalent W(1) atoms. In the fourth O site, O(4) is bonded to two equivalent Mg(1), two equivalent Mg(2), and one W(2) atom to form OMg4W square pyramids that share corners with four equivalent O(2)Mg2W2 trigonal pyramids, edges with two equivalent O(4)Mg4W square pyramids, and  an edgeedge with one O(2)Mg2W2 trigonal pyramid. is represented by the Crystallographic Information File (CIF) [CIF]
data_MgWO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.874
_cell_length_b   8.615
_cell_length_c   8.621
_cell_angle_alpha   98.087
_cell_angle_beta   97.859
_cell_angle_gamma   89.939
_symmetry_Int_Tables_number   1
_cell_volume   209.330
_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  0.191  0.086  0.306  1.0
  Mg  Mg1  1  0.809  0.914  0.694  1.0
  Mg  Mg2  1  0.681  0.737  0.369  1.0
  Mg  Mg3  1  0.319  0.263  0.631  1.0
  W  W4  1  0.947  0.156  0.971  1.0
  W  W5  1  0.686  0.414  0.361  1.0
  W  W6  1  0.314  0.586  0.639  1.0
  W  W7  1  0.053  0.844  0.029  1.0
  O  O8  1  0.473  0.772  0.843  1.0
  O  O9  1  0.855  0.430  0.730  1.0
  O  O10  1  0.145  0.570  0.270  1.0
  O  O11  1  0.527  0.228  0.157  1.0
  O  O12  1  0.364  0.096  0.771  1.0
  O  O13  1  0.751  0.190  0.462  1.0
  O  O14  1  0.636  0.904  0.229  1.0
  O  O15  1  0.249  0.810  0.538  1.0
[/CIF]
.