data_[Sn4Pb4Cl4]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.6036]
_cell_length_b [4.6212]
_cell_length_c [22.5067]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [SnPbCl]
_chemical_formula_sum '[Sn4 Pb4 Cl4]'
_cell_volume [374.7973]
_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
[
  Sn  Sn0  2  0.0000  0.5000  0.2704  1
  Sn  Sn1  2  0.0000  0.5000  0.8447  1
  Pb  Pb2  2  0.0000  0.0000  0.0573  1
  Pb  Pb3  2  0.0000  0.5000  0.6980  1
  Cl  Cl4  2  0.0000  0.0000  0.5505  1
  Cl  Cl5  2  0.0000  0.0000  0.9381  1
]