data_[Si4Ag2Os4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  Os  2.2000  1.3000  0.6730
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [7.1332]
_cell_length_b [7.1332]
_cell_length_c [2.8643]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Si2AgOs2]
_chemical_formula_sum '[Si4 Ag2 Os4]'
_cell_volume [145.7415]
_cell_formula_units_Z [2]
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  4  0.1493  0.6493  0.5000  1
  Ag  Ag1  2  0.0000  0.0000  0.0000  1
  Os  Os2  4  0.1448  0.3552  0.0000  1
]