data_Bi2PbCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.91
_cell_length_b   7.91
_cell_length_c   7.91
_cell_angle_alpha   153.36
_cell_angle_beta   143.47
_cell_angle_gamma   45.79
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Bi2PbCl
_chemical_formula_sum   'Bi2 Pb1 Cl1'
_cell_volume   131.64
_cell_formula_units_Z   1
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
  Bi  Bi0  1  0.0  0.48  0.02  1.0
  Bi  Bi1  1  0.82  0.0  0.27  1.0
  Pb  Pb3  1  0.0  0.0  0.29  1.0
  Cl  Cl2  1  0.0  0.0  0.0  1.0

data_Bi2PbCl
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.64
_cell_length_b   4.96
_cell_length_c   7.91
_cell_angle_alpha   108.27
_cell_angle_beta   103.32
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Bi2PbCl
_chemical_formula_sum   'Bi2 Pb1 Cl1'
_cell_volume   131.64
_cell_formula_units_Z   1
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
  Bi  Bi0  1  0.0  0.27  0.44  1.0
  Bi  Bi1  1  0.52  0.54  0.54  1.0
  Pb  Pb2  1  0.0  0.29  0.29  1.0
  Cl  Cl3  1  0.0  0.0  0.0  1.0

Bi Bi Pb Cl
Bi Bi Pb Cl 0 1 - o - 0 1 - + o 0 2 o + o 1 2 + o o 2 3 o o o 