data_CoSiBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   8.73
_cell_length_b   8.73
_cell_length_c   8.73
_cell_angle_alpha   22.84
_cell_angle_beta   22.84
_cell_angle_gamma   22.84
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoSiBr2
_chemical_formula_sum   'Co1 Si1 Br2'
_cell_volume   88.05
_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
  Co  Co2  1  0.0  0.0  0.75  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Br  Br0  1  0.0  0.0  0.83  1.0
  Br  Br1  1  0.0  0.0  0.67  1.0

data_CoSiBr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.99
_cell_length_b   3.46
_cell_length_c   8.73
_cell_angle_alpha   90.0
_cell_angle_beta   103.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CoSiBr2
_chemical_formula_sum   'Co2 Si2 Br4'
_cell_volume   176.1
_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
  Co  Co0  2  -0.0  0.0  0.25  1.0
  Si  Si1  2  0.0  0.0  0.0  1.0
  Br  Br2  2  0.0  0.0  0.17  1.0
  Br  Br3  2  0.0  0.0  0.33  1.0

Co Si Br Br
Co Si Br Br 0 3 o o o 0 2 o o o 1 2 o o - 
CoSiBr2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two CoSiBr2 clusters. Co(1) is bonded in a linear geometry to one Br(1) and one Br(2) atom. The Co(1)-Br(1) bond length is 0.70 Å. The Co(1)-Br(2) bond length is 0.70 Å. Si(1) is bonded in a single-bond geometry to one Br(1) atom. The Si(1)-Br(1) bond length is 1.48 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a linear geometry to one Co(1) and one Si(1) atom. In the second Br site, Br(2) is bonded in a single-bond geometry to one Co(1) atom.