data_HoHg2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.33
_cell_length_b   5.33
_cell_length_c   3.38
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HoHg2
_chemical_formula_sum   'Ho1 Hg2'
_cell_volume   83.32
_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
  Ho  Ho0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.67  0.54  0.1  1.0
  Hg  Hg2  1  0.0  0.08  0.28  1.0

data_HoHg2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.38
_cell_length_b   5.33
_cell_length_c   5.33
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HoHg2
_chemical_formula_sum   'Ho1 Hg2'
_cell_volume   83.32
_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
  Ho  Ho0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.1  0.67  0.54  1.0
  Hg  Hg2  1  0.28  0.0  0.08  1.0

Ho Hg Hg
HoHg2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one HoHg2 cluster. Ho(1) is bonded in a distorted single-bond geometry to one Hg(1) and one Hg(2) atom. The Ho(1)-Hg(1) bond length is 2.23 Å. The Ho(1)-Hg(2) bond length is 1.03 Å. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded in a distorted single-bond geometry to one Ho(1) atom. In the second Hg site, Hg(2) is bonded in a distorted single-bond geometry to one Ho(1) atom.