data_[Sn4Pb4Se10]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
  Se  2.5500  1.1500  1.0133
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.5633]
_cell_length_b [5.3433]
_cell_length_c [8.4800]
_cell_angle_alpha [90.0000]
_cell_angle_beta [124.2095]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sn2Pb2Se5]
_chemical_formula_sum '[Sn4 Pb4 Se10]'
_cell_volume [545.7150]
_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
[
  Sn  Sn0  4  0.1117  0.0000  0.4191  1.0
  Pb  Pb1  4  0.1166  0.5000  0.9726  1.0
  Se  Se2  4  0.1253  0.0000  0.7555  1.0
  Se  Se3  4  0.1362  0.5000  0.3656  1.0
  Se  Se4  2  0.0000  0.0000  0.0000  1.0
]