data_AgHgRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.25
_cell_length_b   3.25
_cell_length_c   6.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgHgRh2
_chemical_formula_sum   'Ag1 Hg1 Rh2'
_cell_volume   66.9
_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
  Ag  Ag0  1  0.0  0.0  0.0  1.0
  Hg  Hg1  1  0.0  0.0  0.17  1.0
  Rh  Rh2  1  0.62  0.62  0.79  1.0
  Rh  Rh3  1  0.62  0.62  0.54  1.0

data_AgHgRh2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.6
_cell_length_b   4.6
_cell_length_c   6.34
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   AgHgRh2
_chemical_formula_sum   'Ag2 Hg2 Rh4'
_cell_volume   133.79
_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
  Ag  Ag0  2  0.0  0.0  0.0  1.0
  Hg  Hg1  2  0.0  0.0  0.17  1.0
  Rh  Rh2  2  0.12  0.5  0.54  1.0
  Rh  Rh3  2  0.12  0.5  0.79  1.0

Ag Hg Rh Rh
Rh2AgHg crystallizes in the monoclinic Cm space group. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 4-coordinate geometry to one Rh(2) and three equivalent Ag(1) atoms. The Rh(1)-Rh(2) bond length is 1.58 Å. There is one shorter (2.17 Å) and two longer (2.71 Å) Rh(1)-Ag(1) bond lengths. In the second Rh site, Rh(2) is bonded in a 2-coordinate geometry to one Rh(1) and one Hg(1) atom. The Rh(2)-Hg(1) bond length is 2.94 Å. Ag(1) is bonded in a 2-coordinate geometry to three equivalent Rh(1) and one Hg(1) atom. The Ag(1)-Hg(1) bond length is 1.06 Å. Hg(1) is bonded in a single-bond geometry to one Rh(2) and one Ag(1) atom.