data_CoHg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.89
_cell_length_b   2.89
_cell_length_c   3.8
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   91.09
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoHg
_chemical_formula_sum   'Co1 Hg1'
_cell_volume   31.7
_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  Co0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.02  0.0  0.9  1.0

data_CoHg
_symmetry_space_group_name_H-M   Pm
_cell_length_a   2.89
_cell_length_b   2.89
_cell_length_c   3.8
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   CoHg
_chemical_formula_sum   'Co1 Hg1'
_cell_volume   31.71
_cell_formula_units_Z   1
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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.02  0.0  0.9  1.0

Co Hg
Co(Hg) is alpha carbon monoxide-like structured and crystallizes in the monoclinic Pm space group. The structure is zero-dimensional and consists of one cobalt;mercury molecule. Co(1) is bonded in a single-bond geometry to one Hg(1) atom. The Co(1)-Hg(1) bond length is 0.38 Å. Hg(1) is bonded in a single-bond geometry to one Co(1) atom.