data_BiAsPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.11
_cell_length_b   7.86
_cell_length_c   3.43
_cell_angle_alpha   81.7
_cell_angle_beta   73.54
_cell_angle_gamma   24.75
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiAsPb
_chemical_formula_sum   'Bi1 As1 Pb1'
_cell_volume   84.18
_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  Bi1  1  0.97  0.81  0.91  1.0
  As  As0  1  0.97  0.81  0.02  1.0
  Pb  Pb2  1  0.97  0.81  0.28  1.0

data_BiAsPb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.94
_cell_length_b   15.21
_cell_length_c   3.43
_cell_angle_alpha   90.0
_cell_angle_beta   125.09
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BiAsPb
_chemical_formula_sum   'Bi2 As2 Pb2'
_cell_volume   168.37
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
  3  'x+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.47  0.5  0.89  1.0
  As  As1  2  0.47  0.5  0.99  1.0
  Pb  Pb2  2  0.47  0.5  0.25  1.0

Bi As Pb