data_SiBi2W
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.02
_cell_length_b   5.02
_cell_length_c   5.02
_cell_angle_alpha   121.13
_cell_angle_beta   121.13
_cell_angle_gamma   88.06
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiBi2W
_chemical_formula_sum   'Si1 Bi2 W1'
_cell_volume   87.86
_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
  Si  Si2  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.0  0.47  0.8  1.0
  Bi  Bi1  1  0.47  0.0  0.8  1.0
  W  W3  1  0.0  0.0  0.61  1.0

data_SiBi2W
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.98
_cell_length_b   6.98
_cell_length_c   5.02
_cell_angle_alpha   90.0
_cell_angle_beta   134.03
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SiBi2W
_chemical_formula_sum   'Si2 Bi4 W2'
_cell_volume   175.72
_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
  Si  Si0  2  0.0  0.0  0.0  1.0
  Bi  Bi1  4  0.43  0.23  0.66  1.0
  W  W2  2  0.39  0.0  0.39  1.0

Si Bi Bi W
Si Bi Bi W 0 2 - o - 0 1 o - - 0 3 o o - 1 3 o o o 2 3 o o o 