data_MgSiW2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.26
_cell_length_b   3.26
_cell_length_c   5.95
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgSiW2
_chemical_formula_sum   'Mg1 Si1 W2'
_cell_volume   63.27
_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  0.02  1.0
  Si  Si1  1  0.63  0.63  0.53  1.0
  W  W2  1  0.0  0.0  0.94  1.0
  W  W3  1  0.63  0.63  0.38  1.0

data_MgSiW2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.61
_cell_length_b   4.61
_cell_length_c   5.95
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgSiW2
_chemical_formula_sum   'Mg2 Si2 W4'
_cell_volume   126.55
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.0  0.0  0.02  1.0
  Si  Si1  2  0.13  0.5  0.53  1.0
  W  W2  2  0.0  0.0  0.94  1.0
  W  W3  2  0.13  0.5  0.38  1.0

Mg Si W W
MgWWSi is High Pressure Cadmuum Telluride structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two tungsten silicide (wsi) molecules and two MgW clusters. In each MgW cluster, Mg(1) is bonded in a single-bond geometry to one W(1) atom. The Mg(1)-W(1) bond length is 0.49 Å. W(1) is bonded in a single-bond geometry to one Mg(1) atom.