data_HgPdRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.26
_cell_length_b   6.26
_cell_length_c   6.26
_cell_angle_alpha   152.86
_cell_angle_beta   152.86
_cell_angle_gamma   38.76
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HgPdRh
_chemical_formula_sum   'Hg1 Pd1 Rh1'
_cell_volume   50.86
_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
  Hg  Hg0  1  0.0  0.0  0.01  1.0
  Pd  Pd1  1  0.0  0.0  0.84  1.0
  Rh  Rh2  1  0.0  0.0  0.95  1.0

data_HgPdRh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.15
_cell_length_b   4.15
_cell_length_c   6.26
_cell_angle_alpha   90.0
_cell_angle_beta   109.38
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   HgPdRh
_chemical_formula_sum   'Hg2 Pd2 Rh2'
_cell_volume   101.71
_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
  Hg  Hg0  2  0.01  0.0  0.01  1.0
  Pd  Pd1  2  0.34  0.5  0.84  1.0
  Rh  Rh2  2  0.45  0.5  0.95  1.0

Hg Pd Rh
RhPdHg is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two RhPdHg clusters. Rh(1) is bonded in a linear geometry to one Pd(1) and one Hg(1) atom. The Rh(1)-Pd(1) bond length is 0.66 Å. The Rh(1)-Hg(1) bond length is 0.42 Å. Pd(1) is bonded in a single-bond geometry to one Rh(1) atom. Hg(1) is bonded in a single-bond geometry to one Rh(1) atom.