data_Cr3Rh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.18
_cell_length_b   4.18
_cell_length_c   3.02
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cr3Rh
_chemical_formula_sum   'Cr3 Rh1'
_cell_volume   52.81
_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
  Cr  Cr0  1  0.0  0.09  0.51  1.0
  Cr  Cr1  1  0.0  0.0  0.0  1.0
  Cr  Cr2  1  0.09  0.0  0.51  1.0
  Rh  Rh3  1  0.09  0.09  0.0  1.0

data_Cr3Rh
_symmetry_space_group_name_H-M   Amm2
_cell_length_a   3.02
_cell_length_b   5.91
_cell_length_c   5.91
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   38
_chemical_formula_structural   Cr3Rh
_chemical_formula_sum   'Cr6 Rh2'
_cell_volume   105.62
_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, y, z'
  4  'x, -y, z'
  5  'x, y+1/2, z+1/2'
  6  '-x, -y+1/2, z+1/2'
  7  '-x, y+1/2, z+1/2'
  8  'x, -y+1/2, z+1/2'
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
  Cr  Cr0  4  0.5  0.05  0.05  1.0
  Cr  Cr1  2  0.0  0.0  0.0  1.0
  Rh  Rh2  2  0.0  0.0  0.09  1.0

Cr Cr Cr Rh
Cr3Rh crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cr clusters and two CrRh clusters. In each Cr cluster, Cr(1) is bonded in a single-bond geometry to one Cr(1) atom. The Cr(1)-Cr(1) bond length is 0.54 Å. In each CrRh cluster, Cr(2) is bonded in a single-bond geometry to one Rh(1) atom. The Cr(2)-Rh(1) bond length is 0.54 Å. Rh(1) is bonded in a single-bond geometry to one Cr(2) atom.