data_MgOsW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.27
_cell_length_b   5.27
_cell_length_c   5.27
_cell_angle_alpha   145.76
_cell_angle_beta   128.31
_cell_angle_gamma   63.48
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgOsW2
_chemical_formula_sum   'Mg1 Os1 W2'
_cell_volume   63.76
_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  0.0  0.0  0.52  1.0
  Os  Os1  1  0.0  0.3  0.34  1.0
  W  W2  1  0.0  0.0  0.95  1.0
  W  W3  1  0.55  0.0  0.11  1.0

data_MgOsW2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.1
_cell_length_b   4.59
_cell_length_c   5.27
_cell_angle_alpha   115.84
_cell_angle_beta   107.12
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgOsW2
_chemical_formula_sum   'Mg1 Os1 W2'
_cell_volume   63.76
_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  0.0  0.52  0.52  1.0
  Os  Os1  1  0.7  0.04  0.04  1.0
  W  W2  1  0.0  0.11  0.56  1.0
  W  W3  1  0.0  0.95  0.95  1.0

Mg Os W W
MgW2Os crystallizes in the triclinic P1 space group. Mg(1) is bonded in a 4-coordinate geometry to one W(1), two equivalent W(2), and one Os(1) atom. The Mg(1)-W(1) bond length is 2.22 Å. There is one shorter (1.99 Å) and one longer (2.61 Å) Mg(1)-W(2) bond length. The Mg(1)-Os(1) bond length is 2.43 Å. There are two inequivalent W sites. In the first W site, W(1) is bonded in a 3-coordinate geometry to one Mg(1) and two equivalent Os(1) atoms. There is one shorter (1.17 Å) and one longer (2.09 Å) W(1)-Os(1) bond length. In the second W site, W(2) is bonded in a 1-coordinate geometry to two equivalent Mg(1) atoms. Os(1) is bonded in a distorted single-bond geometry to one Mg(1) and two equivalent W(1) atoms.