data_Co2Bi
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.98
_cell_length_b   3.98
_cell_length_c   3.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Co2Bi
_chemical_formula_sum   'Co2 Bi1'
_cell_volume   50.88
_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  Co1  1  0.99  0.15  0.85  1.0
  Co  Co2  1  0.0  0.3  0.85  1.0
  Bi  Bi0  1  0.0  0.0  0.0  1.0

data_Co2Bi
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.98
_cell_length_b   6.9
_cell_length_c   3.7
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Co2Bi
_chemical_formula_sum   'Co4 Bi2'
_cell_volume   101.76
_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  0.15  0.0  0.85  1.0
  Co  Co1  2  0.3  0.0  0.85  1.0
  Bi  Bi2  2  0.0  0.0  0.0  1.0

Co Co Bi
Co2Bi is Hg_xSn structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Co2Bi cluster. There are two inequivalent Co sites. In the first Co site, Co(1) is bonded in a distorted bent 150 degrees geometry to one Co(2) and one Bi(1) atom. The Co(1)-Co(2) bond length is 0.58 Å. The Co(1)-Bi(1) bond length is 0.83 Å. In the second Co site, Co(2) is bonded in a distorted single-bond geometry to one Co(1) atom. Bi(1) is bonded in a single-bond geometry to one Co(1) atom.