data_BaHgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.19
_cell_length_b   6.19
_cell_length_c   6.19
_cell_angle_alpha   144.46
_cell_angle_beta   144.46
_cell_angle_gamma   51.14
_symmetry_Int_Tables_number   1
_chemical_formula_structural   BaHgRh
_chemical_formula_sum   'Ba1 Hg1 Rh1'
_cell_volume   79.63
_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
  Ba  Ba0  1  0.0  0.0  0.02  1.0
  Hg  Hg1  1  0.0  0.0  0.25  1.0
  Rh  Rh2  1  0.0  0.0  0.89  1.0

data_BaHgRh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.34
_cell_length_b   5.34
_cell_length_c   6.19
_cell_angle_alpha   90.0
_cell_angle_beta   115.57
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   BaHgRh
_chemical_formula_sum   'Ba2 Hg2 Rh2'
_cell_volume   159.26
_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
  Ba  Ba0  2  0.0  0.0  0.98  1.0
  Hg  Hg1  2  0.0  0.0  0.75  1.0
  Rh  Rh2  2  0.0  0.0  0.11  1.0

Ba Hg Rh
BaRhHg is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two BaRhHg clusters. Ba(1) is bonded in a linear geometry to one Rh(1) and one Hg(1) atom. The Ba(1)-Rh(1) bond length is 0.79 Å. The Ba(1)-Hg(1) bond length is 1.39 Å. Rh(1) is bonded in a single-bond geometry to one Ba(1) atom. Hg(1) is bonded in a single-bond geometry to one Ba(1) atom.