data_Na2HgRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.97
_cell_length_b   2.97
_cell_length_c   9.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   92.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgRh
_chemical_formula_sum   'Na2 Hg1 Rh1'
_cell_volume   85.07
_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
  Na  Na1  1  0.05  0.0  0.49  1.0
  Na  Na2  1  0.05  0.0  0.17  1.0
  Hg  Hg0  1  0.0  0.0  0.83  1.0
  Rh  Rh3  1  0.0  0.0  0.0  1.0

data_Na2HgRh
_symmetry_space_group_name_H-M   P1
_cell_length_a   2.97
_cell_length_b   2.97
_cell_length_c   9.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   92.72
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Na2HgRh
_chemical_formula_sum   'Na2 Hg1 Rh1'
_cell_volume   85.07
_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
  Na  Na0  1  0.05  0.0  0.17  1.0
  Na  Na1  1  0.05  0.0  0.49  1.0
  Hg  Hg2  1  0.0  0.0  0.83  1.0
  Rh  Rh3  1  0.0  0.0  0.0  1.0

Na Na Hg Rh
Na2RhHg crystallizes in the triclinic P1 space group. There are two inequivalent Na sites. In the first Na site, Na(1) is bonded to one Na(2), four equivalent Na(1), and one Hg(1) atom to form a mixture of distorted corner and edge-sharing NaNa5Hg octahedra. The corner-sharing octahedra are not tilted. The Na(1)-Na(2) bond length is 3.10 Å. All Na(1)-Na(1) bond lengths are 2.97 Å. The Na(1)-Hg(1) bond length is 3.28 Å. In the second Na site, Na(2) is bonded in a single-bond geometry to one Na(1) and one Rh(1) atom. The Na(2)-Rh(1) bond length is 1.61 Å. Rh(1) is bonded in a distorted linear geometry to one Na(2) and one Hg(1) atom. The Rh(1)-Hg(1) bond length is 1.67 Å. Hg(1) is bonded in a distorted single-bond geometry to one Na(1) and one Rh(1) atom.