data_BiP2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.06
_cell_length_b   5.06
_cell_length_c   3.61
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiP2Pb
_chemical_formula_sum   'Bi1 P2 Pb1'
_cell_volume   92.3
_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  0.53  0.53  0.0  1.0
  P  P1  1  0.53  0.0  0.8  1.0
  P  P2  1  0.0  0.53  0.8  1.0
  Pb  Pb3  1  0.0  0.0  0.0  1.0

data_BiP2Pb
_symmetry_space_group_name_H-M   Cm
_cell_length_a   7.15
_cell_length_b   7.15
_cell_length_c   3.61
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BiP2Pb
_chemical_formula_sum   'Bi2 P4 Pb2'
_cell_volume   184.6
_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  0.03  0.5  0.0  1.0
  P  P1  4  0.26  0.26  0.8  1.0
  Pb  Pb2  2  0.0  0.0  0.0  1.0

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