data_NiHg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   6.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NiHg2
_chemical_formula_sum   'Ni2 Hg4'
_cell_volume   110.5
_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
  Ni  Ni4  1  0.0  0.65  0.51  1.0
  Ni  Ni5  1  0.3  0.33  0.54  1.0
  Hg  Hg0  1  0.0  0.0  0.03  1.0
  Hg  Hg1  1  0.0  0.0  0.0  1.0
  Hg  Hg2  1  0.0  0.65  0.54  1.0
  Hg  Hg3  1  0.3  0.33  0.51  1.0

data_NiHg2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.59
_cell_length_b   4.59
_cell_length_c   6.05
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NiHg2
_chemical_formula_sum   'Ni2 Hg4'
_cell_volume   110.5
_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
  Ni  Ni0  1  0.0  0.65  0.51  1.0
  Ni  Ni1  1  0.3  0.33  0.54  1.0
  Hg  Hg2  1  0.0  0.0  0.0  1.0
  Hg  Hg3  1  0.0  0.0  0.03  1.0
  Hg  Hg4  1  0.0  0.65  0.54  1.0
  Hg  Hg5  1  0.3  0.33  0.51  1.0

Ni Ni Hg Hg Hg Hg
HgNiHg is alpha carbon monoxide-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of two 62712-31-6 molecules and one mercury, mol. (hg2) molecule.