data_Mg(W2O3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.64
_cell_length_b   5.64
_cell_length_c   16.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   146.68
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg(W2O3)2
_chemical_formula_sum   'Mg2 W8 O12'
_cell_volume   291.82
_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  0.62  0.45  0.54  1.0
  Mg  Mg1  1  0.62  0.55  0.18  1.0
  W  W2  1  0.62  0.61  0.89  1.0
  W  W3  1  0.62  0.04  0.66  1.0
  W  W4  1  0.62  0.39  0.83  1.0
  W  W5  1  0.62  0.96  0.06  1.0
  W  W6  1  0.62  0.61  0.47  1.0
  W  W7  1  0.62  0.39  0.25  1.0
  W  W8  1  0.62  0.96  0.3  1.0
  W  W9  1  0.62  0.04  0.42  1.0
  O  O10  1  0.0  0.0  0.36  1.0
  O  O11  1  0.0  0.0  0.0  1.0
  O  O12  1  0.62  0.01  0.16  1.0
  O  O13  1  0.62  0.99  0.56  1.0
  O  O14  1  0.62  0.99  0.8  1.0
  O  O15  1  0.62  0.01  0.92  1.0
  O  O16  1  0.62  0.98  0.61  1.0
  O  O17  1  0.62  0.02  0.11  1.0
  O  O18  1  0.62  0.02  0.25  1.0
  O  O19  1  0.62  0.98  0.47  1.0
  O  O20  1  0.62  0.07  0.54  1.0
  O  O21  1  0.62  0.93  0.18  1.0

data_Mg(W2O3)2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.23
_cell_length_b   5.64
_cell_length_c   16.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   106.66
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg(W2O3)2
_chemical_formula_sum   'Mg2 W8 O12'
_cell_volume   291.82
_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  0.45  0.07  0.18  1.0
  Mg  Mg1  1  0.55  0.16  0.54  1.0
  W  W2  1  0.04  0.66  0.06  1.0
  W  W3  1  0.04  0.66  0.3  1.0
  W  W4  1  0.39  0.0  0.47  1.0
  W  W5  1  0.39  0.0  0.89  1.0
  W  W6  1  0.61  0.23  0.25  1.0
  W  W7  1  0.61  0.23  0.83  1.0
  W  W8  1  0.96  0.57  0.42  1.0
  W  W9  1  0.96  0.57  0.66  1.0
  O  O10  1  0.0  0.0  0.0  1.0
  O  O11  1  0.0  0.0  0.36  1.0
  O  O12  1  0.01  0.63  0.56  1.0
  O  O13  1  0.01  0.63  0.8  1.0
  O  O14  1  0.02  0.64  0.47  1.0
  O  O15  1  0.02  0.64  0.61  1.0
  O  O16  1  0.07  0.69  0.18  1.0
  O  O17  1  0.93  0.54  0.54  1.0
  O  O18  1  0.98  0.59  0.11  1.0
  O  O19  1  0.98  0.59  0.25  1.0
  O  O20  1  0.99  0.6  0.16  1.0
  O  O21  1  0.99  0.6  0.92  1.0

Mg Mg W W W W W W W W O O O O O O O O O O O O
Mg(W2O3)2 crystallizes in the triclinic P1 space group. There are two inequivalent Mg sites. In the first Mg site, Mg(1) is bonded in a bent 120 degrees geometry to one W(5) and one O(11) atom. The Mg(1)-W(5) bond length is 1.47 Å. The Mg(1)-O(11) bond length is 2.15 Å. In the second Mg site, Mg(2) is bonded in a bent 120 degrees geometry to one W(6) and one O(12) atom. The Mg(2)-W(6) bond length is 1.47 Å. The Mg(2)-O(12) bond length is 2.15 Å. There are eight inequivalent W sites. In the first W site, W(1) is bonded in a 5-coordinate geometry to one W(3), one O(5), one O(6), and two equivalent O(2) atoms. The W(1)-W(3) bond length is 1.60 Å. The W(1)-O(5) bond length is 2.57 Å. The W(1)-O(6) bond length is 2.30 Å. There is one shorter (2.22 Å) and one longer (2.71 Å) W(1)-O(2) bond length. In the second W site, W(2) is bonded in a distorted single-bond geometry to one O(5) and one O(7) atom. The W(2)-O(5) bond length is 2.35 Å. The W(2)-O(7) bond length is 1.01 Å. In the third W site, W(3) is bonded in a 3-coordinate geometry to one W(1), one O(5), and one O(6) atom. The W(3)-O(5) bond length is 2.30 Å. The W(3)-O(6) bond length is 2.57 Å. In the fourth W site, W(4) is bonded in a distorted single-bond geometry to one O(2), one O(6), and one O(8) atom. The W(4)-O(2) bond length is 2.19 Å. The W(4)-O(6) bond length is 2.35 Å. The W(4)-O(8) bond length is 1.01 Å. In the fifth W site, W(5) is bonded in a 1-coordinate geometry to one Mg(1) and two equivalent O(1) atoms. There is one shorter (2.22 Å) and one longer (2.71 Å) W(5)-O(1) bond length. In the sixth W site, W(6) is bonded in a 2-coordinate geometry to one Mg(2), one O(9), and two equivalent O(1) atoms. The W(6)-O(9) bond length is 2.06 Å. There is one shorter (2.74 Å) and one longer (2.75 Å) W(6)-O(1) bond length. In the seventh W site, W(7) is bonded in a distorted single-bond geometry to one O(1) and one O(9) atom. The W(7)-O(1) bond length is 2.19 Å. The W(7)-O(9) bond length is 1.01 Å. In the eighth W site, W(8) is bonded in a single-bond geometry to one O(1) and one O(10) atom. The W(8)-O(1) bond length is 2.56 Å. The W(8)-O(10) bond length is 1.01 Å. There are twelve inequivalent O sites. In the first O site, O(1) is bonded in a 6-coordinate geometry to one W(7), one W(8), two equivalent W(5), and two equivalent W(6) atoms. In the second O site, O(2) is bonded in a 3-coordinate geometry to one W(4) and two equivalent W(1) atoms. In the third O site, O(3) is bonded in a distorted bent 120 degrees geometry to one O(12) and one O(8) atom. The O(3)-O(12) bond length is 0.55 Å. The O(3)-O(8) bond length is 0.84 Å. In the fourth O site, O(4) is bonded in a distorted bent 120 degrees geometry to one O(11) and one O(7) atom. The O(4)-O(11) bond length is 0.55 Å. The O(4)-O(7) bond length is 0.84 Å. In the fifth O site, O(5) is bonded in a distorted rectangular see-saw-like geometry to one W(1), one W(2), one W(3), and one O(6) atom. The O(5)-O(6) bond length is 1.94 Å. In the sixth O site, O(6) is bonded in a distorted rectangular see-saw-like geometry to one W(1), one W(3), one W(4), and one O(5) atom. In the seventh O site, O(7) is bonded in a distorted bent 150 degrees geometry to one W(2) and one O(4) atom. In the eighth O site, O(8) is bonded in a distorted bent 150 degrees geometry to one W(4) and one O(3) atom. In the ninth O site, O(9) is bonded in a distorted single-bond geometry to one W(6) and one W(7) atom. In the tenth O site, O(10) is bonded in a distorted single-bond geometry to one W(8) atom. In the eleventh O site, O(11) is bonded in a 2-coordinate geometry to one Mg(1) and one O(4) atom. In the twelfth O site, O(12) is bonded in a 2-coordinate geometry to one Mg(2) and one O(3) atom.