data_Si2POs
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.3
_cell_length_b   7.3
_cell_length_c   7.3
_cell_angle_alpha   24.01
_cell_angle_beta   24.01
_cell_angle_gamma   24.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2POs
_chemical_formula_sum   'Si2 P1 Os1'
_cell_volume   56.59
_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  0.05  1.0
  Si  Si3  1  0.0  0.0  0.31  1.0
  P  P1  1  0.0  0.0  0.95  1.0
  Os  Os0  1  0.0  0.0  0.58  1.0

data_Si2POs
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.26
_cell_length_b   3.04
_cell_length_c   7.3
_cell_angle_alpha   90.0
_cell_angle_beta   103.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Si2POs
_chemical_formula_sum   'Si4 P2 Os2'
_cell_volume   113.18
_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  0.95  1.0
  Si  Si1  2  0.0  0.0  0.69  1.0
  P  P2  2  -0.0  0.0  0.05  1.0
  Os  Os3  2  -0.0  0.0  0.42  1.0

Si Si P Os
Si Si P Os 0 2 o o - 0 1 o o o 1 3 o o o 