data_[Pt4Pb4Se4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Pt  2.2800  1.3500  0.8050
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [Pca2_1]
_cell_length_a [6.5228]
_cell_length_b [6.4610]
_cell_length_c [6.5310]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [29]
_chemical_formula_structural [PtPbSe]
_chemical_formula_sum '[Pt4 Pb4 Se4]'
_cell_volume [275.2404]
_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
[
  Pt  Pt0  4  0.0154  0.2301  0.5030  1.0
  Pb  Pb1  4  0.1299  0.6297  0.6278  1.0
  Se  Se2  4  0.1243  0.1251  0.8711  1.0
]