data_[Si12Os8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [P-4c2]
_cell_length_a [5.6510]
_cell_length_b [5.6510]
_cell_length_c [8.9439]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [116]
_chemical_formula_structural [Si3Os2]
_chemical_formula_sum '[Si12 Os8]'
_cell_volume [285.6083]
_cell_formula_units_Z [4]
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  Si0  8  0.2060  0.3560  0.0908  1.0
  Si  Si1  4  0.1685  0.1685  0.7500  1.0
  Os  Os2  4  0.0000  0.5000  0.3719  1.0
  Os  Os3  2  0.0000  0.0000  0.0000  1.0
  Os  Os4  2  0.5000  0.5000  0.2500  1.0
]