data_CoNi2Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.46
_cell_length_b   4.46
_cell_length_c   4.46
_cell_angle_alpha   132.42
_cell_angle_beta   132.42
_cell_angle_gamma   69.57
_symmetry_Int_Tables_number   1
_chemical_formula_structural   CoNi2Rh
_chemical_formula_sum   'Co1 Ni2 Rh1'
_cell_volume   47.44
_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
  Co  Co0  1  0.0  0.0  0.0  1.0
  Ni  Ni1  1  0.8  0.0  0.83  1.0
  Ni  Ni2  1  0.0  0.8  0.83  1.0
  Rh  Rh3  1  0.0  0.0  0.66  1.0

data_CoNi2Rh
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.09
_cell_length_b   5.09
_cell_length_c   4.46
_cell_angle_alpha   90.0
_cell_angle_beta   124.79
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   CoNi2Rh
_chemical_formula_sum   'Co2 Ni4 Rh2'
_cell_volume   94.88
_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
  Co  Co0  2  0.0  0.0  0.0  1.0
  Ni  Ni1  4  0.07  0.1  0.97  1.0
  Rh  Rh2  2  0.34  0.0  0.34  1.0

Co Ni Ni Rh
Co Ni Ni Rh 0 1 - o - 0 2 o - - 0 3 o o - 1 3 + o o 2 3 o + o 
RhCoNi2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two RhCoNi2 clusters. Rh(1) is bonded in a 3-coordinate geometry to one Co(1) and two equivalent Ni(1) atoms. The Rh(1)-Co(1) bond length is 1.50 Å. Both Rh(1)-Ni(1) bond lengths are 1.51 Å. Co(1) is bonded in a distorted water-like geometry to one Rh(1) and two equivalent Ni(1) atoms. Both Co(1)-Ni(1) bond lengths are 0.68 Å. Ni(1) is bonded in a distorted single-bond geometry to one Rh(1) and one Co(1) atom.