data_NiRh4
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   9.31
_cell_length_b   9.31
_cell_length_c   9.31
_cell_angle_alpha   163.23
_cell_angle_beta   163.23
_cell_angle_gamma   23.81
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NiRh4
_chemical_formula_sum   'Ni1 Rh4'
_cell_volume   67.25
_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
  Ni  Ni0  1  0.0  0.0  0.0  1.0
  Rh  Rh1  1  0.0  0.0  0.41  1.0
  Rh  Rh2  1  0.0  0.0  0.63  1.0
  Rh  Rh3  1  0.0  0.0  0.6  1.0
  Rh  Rh4  1  0.0  0.0  0.81  1.0

data_NiRh4
_symmetry_space_group_name_H-M   Cm
_cell_length_a   3.84
_cell_length_b   3.84
_cell_length_c   9.31
_cell_angle_alpha   90.0
_cell_angle_beta   101.9
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   NiRh4
_chemical_formula_sum   'Ni2 Rh8'
_cell_volume   134.49
_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
  Ni  Ni0  2  0.0  0.0  0.0  1.0
  Rh  Rh1  2  0.1  0.5  0.6  1.0
  Rh  Rh2  2  0.13  0.5  0.63  1.0
  Rh  Rh3  2  0.31  0.5  0.81  1.0
  Rh  Rh4  2  0.41  0.0  0.41  1.0

Ni Rh Rh Rh Rh
Ni Rh Rh Rh Rh 0 4 o o - 1 3 o o o 1 2 o o o 2 3 o o o 2 4 o o o 3 4 o o o 
(Rh)3NiRh crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two NiRh clusters and two Rh clusters. In each NiRh cluster, Rh(4) is bonded in a distorted single-bond geometry to one Ni(1) atom. The Rh(4)-Ni(1) bond length is 1.73 Å. Ni(1) is bonded in a single-bond geometry to one Rh(4) atom. In each Rh cluster, there are three inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a distorted single-bond geometry to one Rh(3) atom. The Rh(1)-Rh(3) bond length is 1.75 Å. In the second Rh site, Rh(2) is bonded in a single-bond geometry to one Rh(3) atom. The Rh(2)-Rh(3) bond length is 0.25 Å. In the third Rh site, Rh(3) is bonded in a single-bond geometry to one Rh(1) and one Rh(2) atom.