data_Bi2AsCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.22
_cell_length_b   5.22
_cell_length_c   3.74
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Bi2AsCl
_chemical_formula_sum   'Bi2 As1 Cl1'
_cell_volume   101.93
_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  0.83  0.14  0.87  1.0
  Bi  Bi2  1  0.83  0.86  0.87  1.0
  As  As0  1  0.67  0.0  0.0  1.0
  Cl  Cl3  1  0.0  0.0  0.0  1.0

data_Bi2AsCl
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.74
_cell_length_b   5.22
_cell_length_c   5.22
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Bi2AsCl
_chemical_formula_sum   'Bi2 As1 Cl1'
_cell_volume   101.94
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  2  0.87  0.14  0.83  1.0
  As  As1  1  0.0  0.0  0.67  1.0
  Cl  Cl2  1  0.0  0.0  0.0  1.0

Bi Bi As Cl