data_ZnRh3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.88
_cell_length_b   4.88
_cell_length_c   4.88
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnRh3
_chemical_formula_sum   'Zn2 Rh6'
_cell_volume   116.4
_cell_formula_units_Z   2
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
  Zn  Zn6  1  0.44  0.44  0.44  1.0
  Zn  Zn7  1  0.0  0.0  0.0  1.0
  Rh  Rh0  1  0.44  0.66  0.0  1.0
  Rh  Rh1  1  0.44  0.22  0.0  1.0
  Rh  Rh2  1  0.66  0.0  0.44  1.0
  Rh  Rh3  1  0.0  0.44  0.66  1.0
  Rh  Rh4  1  0.0  0.44  0.22  1.0
  Rh  Rh5  1  0.22  0.0  0.44  1.0

data_ZnRh3
_symmetry_space_group_name_H-M   R3
_cell_length_a   6.91
_cell_length_b   6.91
_cell_length_c   8.46
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   146
_chemical_formula_structural   ZnRh3
_chemical_formula_sum   'Zn6 Rh18'
_cell_volume   349.2
_cell_formula_units_Z   6
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-y, x-y, z'
  3  '-x+y, -x, z'
  4  'x+1/3, y+2/3, z+2/3'
  5  '-y+1/3, x-y+2/3, z+2/3'
  6  '-x+y+1/3, -x+2/3, z+2/3'
  7  'x+2/3, y+1/3, z+1/3'
  8  '-y+2/3, x-y+1/3, z+1/3'
  9  '-x+y+2/3, -x+1/3, z+1/3'
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
  Zn  Zn0  3  0.0  0.0  0.0  1.0
  Zn  Zn1  3  0.0  0.0  0.44  1.0
  Rh  Rh2  9  -0.0  0.78  0.22  1.0
  Rh  Rh3  9  0.07  0.37  0.37  1.0

Zn Zn Rh Rh Rh Rh Rh Rh
Rh3Zn is beta Plutonium-derived structured and crystallizes in the trigonal R3 space group. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 1-coordinate geometry to two equivalent Zn(1) and two equivalent Zn(2) atoms. There is one shorter (2.41 Å) and one longer (2.93 Å) Rh(1)-Zn(1) bond length. There is one shorter (2.71 Å) and one longer (3.19 Å) Rh(1)-Zn(2) bond length. In the second Rh site, Rh(2) is bonded in a 2-coordinate geometry to two equivalent Zn(1) and two equivalent Zn(2) atoms. There is one shorter (2.41 Å) and one longer (2.93 Å) Rh(2)-Zn(1) bond length. There is one shorter (2.41 Å) and one longer (2.93 Å) Rh(2)-Zn(2) bond length. There are two inequivalent Zn sites. In the first Zn site, Zn(1) is bonded to six equivalent Rh(1) and six equivalent Rh(2) atoms to form distorted edge-sharing ZnRh12 cuboctahedra. In the second Zn site, Zn(2) is bonded in a 12-coordinate geometry to six equivalent Rh(1) and six equivalent Rh(2) atoms.