data_BiP3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.93
_cell_length_b   5.93
_cell_length_c   5.93
_cell_angle_alpha   141.62
_cell_angle_beta   141.62
_cell_angle_gamma   55.4
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiP3
_chemical_formula_sum   'Bi1 P3'
_cell_volume   79.77
_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  0.0  0.25  1.0
  P  P1  1  0.0  0.95  0.62  1.0
  P  P2  1  0.0  0.0  0.0  1.0
  P  P3  1  0.95  0.0  0.62  1.0

data_BiP3
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.51
_cell_length_b   5.51
_cell_length_c   5.93
_cell_angle_alpha   90.0
_cell_angle_beta   117.7
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BiP3
_chemical_formula_sum   'Bi2 P6'
_cell_volume   159.55
_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  0.25  0.0  0.25  1.0
  P  P1  4  0.15  0.47  0.68  1.0
  P  P2  2  0.0  0.0  0.0  1.0

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