data_BiBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   7.28
_cell_length_b   7.28
_cell_length_c   5.25
_cell_angle_alpha   105.97
_cell_angle_beta   105.97
_cell_angle_gamma   29.95
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiBr
_chemical_formula_sum   'Bi2 Br2'
_cell_volume   133.07
_cell_formula_units_Z   2
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  0.95  0.0  0.98  1.0
  Bi  Bi1  1  0.61  0.0  0.06  1.0
  Br  Br2  1  0.41  0.0  0.21  1.0
  Br  Br3  1  0.15  0.0  0.82  1.0

data_BiBr
_symmetry_space_group_name_H-M   P-1
_cell_length_a   3.76
_cell_length_b   5.25
_cell_length_c   7.28
_cell_angle_alpha   105.97
_cell_angle_beta   104.98
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   BiBr
_chemical_formula_sum   'Bi2 Br2'
_cell_volume   133.07
_cell_formula_units_Z   2
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  0.0  0.04  0.33  1.0
  Br  Br1  2  0.0  0.2  0.13  1.0

Bi Bi Br Br
BiBr crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two bismuth bromine molecules. Bi(1) is bonded in a single-bond geometry to one Br(1) atom. The Bi(1)-Br(1) bond length is 1.89 Å. Br(1) is bonded in a single-bond geometry to one Bi(1) atom.