data_[Cu4Sn4Pb8S20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cu  1.9000  1.3500  0.8200
  Sn  1.9600  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
  S  2.5800  1.0000  0.8800
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.8289]
_cell_length_b [17.0535]
_cell_length_c [13.1382]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [CuSnPb2S5]
_chemical_formula_sum '[Cu4 Sn4 Pb8 S20]'
_cell_volume [857.8739]
_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
[
  Cu  Cu0  4  0.0000  0.4404  0.4266  1.0
  Sn  Sn1  4  0.0000  0.2162  0.0382  1.0
  Pb  Pb2  4  0.0000  0.0730  0.6569  1.0
  Pb  Pb3  4  0.0000  0.1379  0.3299  1.0
  S  S4  4  0.0000  0.0598  0.0225  1.0
  S  S5  4  0.0000  0.2696  0.6720  1.0
  S  S6  4  0.0000  0.3032  0.4030  1.0
  S  S7  4  0.0000  0.3635  0.9969  1.0
  S  S8  4  0.0000  0.4934  0.7780  1.0
]