The structure described by RhHg3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Rh(1) is bonded to four equivalent Hg(2) and eight equivalent Hg(1) atoms to form RhHg12 cuboctahedra that share corners with four equivalent Rh(1)Hg12 cuboctahedra, edges with eight equivalent Rh(1)Hg12 cuboctahedra, edges with sixteen equivalent Hg(1)Hg8Rh4 cuboctahedra, faces with four equivalent Rh(1)Hg12 cuboctahedra, and faces with eight equivalent Hg(1)Hg8Rh4 cuboctahedra. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded to four equivalent Rh(1), four equivalent Hg(1), and four equivalent Hg(2) atoms to form HgHg8Rh4 cuboctahedra that share corners with twelve equivalent Hg(1)Hg8Rh4 cuboctahedra, edges with eight equivalent Rh(1)Hg12 cuboctahedra, edges with eight equivalent Hg(1)Hg8Rh4 cuboctahedra, faces with four equivalent Rh(1)Hg12 cuboctahedra, and faces with ten equivalent Hg(1)Hg8Rh4 cuboctahedra. In the second Hg site, Hg(2) is bonded in a distorted square co-planar geometry to four equivalent Rh(1) and eight equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hg3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.454
_cell_length_b   5.454
_cell_length_c   5.454
_cell_angle_alpha   135.160
_cell_angle_beta   135.160
_cell_angle_gamma   65.282
_symmetry_Int_Tables_number   1
_cell_volume   79.508
_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  0.750  0.250  0.500  1.0
  Hg  Hg1  1  0.250  0.750  0.500  1.0
  Hg  Hg2  1  0.500  0.500  0.000  1.0
  Rh  Rh3  1  0.000  0.000  0.000  1.0
[/CIF]
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The structure described by RhHg3 is Uranium Silicide-like structured and crystallizes in the tetragonal I4/mmm space group. Rh(1) is bonded to four equivalent Hg(2) and eight equivalent Hg(1) atoms to form RhHg12 cuboctahedra that share corners with four equivalent Rh(1)Hg12 cuboctahedra, edges with eight equivalent Rh(1)Hg12 cuboctahedra, edges with sixteen equivalent Hg(1)Hg8Rh4 cuboctahedra, faces with four equivalent Rh(1)Hg12 cuboctahedra, and faces with eight equivalent Hg(1)Hg8Rh4 cuboctahedra. There are two inequivalent Hg sites. In the first Hg site, Hg(1) is bonded to four equivalent Rh(1), four equivalent Hg(1), and four equivalent Hg(2) atoms to form HgHg8Rh4 cuboctahedra that share corners with twelve equivalent Hg(1)Hg8Rh4 cuboctahedra, edges with eight equivalent Rh(1)Hg12 cuboctahedra, edges with eight equivalent Hg(1)Hg8Rh4 cuboctahedra, faces with four equivalent Rh(1)Hg12 cuboctahedra, and faces with ten equivalent Hg(1)Hg8Rh4 cuboctahedra. In the second Hg site, Hg(2) is bonded in a distorted square co-planar geometry to four equivalent Rh(1) and eight equivalent Hg(1) atoms. is represented by the Crystallographic Information File (CIF) [CIF]
data_Hg3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.454
_cell_length_b   5.454
_cell_length_c   5.454
_cell_angle_alpha   135.160
_cell_angle_beta   135.160
_cell_angle_gamma   65.282
_symmetry_Int_Tables_number   1
_cell_volume   79.508
_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  0.750  0.250  0.500  1.0
  Hg  Hg1  1  0.250  0.750  0.500  1.0
  Hg  Hg2  1  0.500  0.500  0.000  1.0
  Rh  Rh3  1  0.000  0.000  0.000  1.0
[/CIF]
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