data_BiCl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.78
_cell_length_b   3.78
_cell_length_c   8.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BiCl
_chemical_formula_sum   'Bi2 Cl2'
_cell_volume   115.56
_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  0.89  0.0  0.16  1.0
  Bi  Bi1  1  0.0  0.89  0.94  1.0
  Cl  Cl2  1  0.89  0.0  0.38  1.0
  Cl  Cl3  1  0.0  0.89  0.72  1.0

data_BiCl
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   5.34
_cell_length_b   5.34
_cell_length_c   8.1
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   BiCl
_chemical_formula_sum   'Bi4 Cl4'
_cell_volume   231.12
_cell_formula_units_Z   4
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, -z'
  3  '-x, y, -z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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  4  0.06  0.0  0.89  1.0
  Cl  Cl1  4  0.06  0.0  0.67  1.0

Bi Bi Cl Cl
Bi Bi Cl Cl 0 1 + - - 0 2 o o o 1 3 o o o 
BiCl is Cubic alpha N2-like structured and crystallizes in the monoclinic C2/m space group. The structure is zero-dimensional and consists of four chlorobismuth molecules. Bi(1) is bonded in a distorted single-bond geometry to one Cl(1) atom. The Bi(1)-Cl(1) bond length is 1.79 Å. Cl(1) is bonded in a single-bond geometry to one Bi(1) atom.