data_SeBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   8.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SeBr2
_chemical_formula_sum   'Se2 Br4'
_cell_volume   158.89
_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
  Se  Se4  1  0.0  0.75  0.02  1.0
  Se  Se5  1  0.38  0.37  0.07  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0
  Br  Br1  1  0.0  0.0  0.05  1.0
  Br  Br2  1  0.38  0.37  0.02  1.0
  Br  Br3  1  0.0  0.75  0.07  1.0

data_SeBr2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.76
_cell_length_b   4.76
_cell_length_c   8.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SeBr2
_chemical_formula_sum   'Se2 Br4'
_cell_volume   158.89
_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
  Se  Se0  1  -0.0  0.75  0.02  1.0
  Se  Se1  1  0.38  0.37  0.07  1.0
  Br  Br2  1  -0.0  0.75  0.07  1.0
  Br  Br3  1  0.0  0.0  0.0  1.0
  Br  Br4  1  0.0  0.0  0.05  1.0
  Br  Br5  1  0.38  0.37  0.02  1.0

Se Se Br Br Br Br
SeBr2 is alpha carbon monoxide-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one hydrogen bromide hydrogen bromide molecule and two SeBr clusters. In each SeBr cluster, Se(1) is bonded in a single-bond geometry to one Br(4) atom. The Se(1)-Br(4) bond length is 0.39 Å. Br(4) is bonded in a single-bond geometry to one Se(1) atom.