data_RuRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.68
_cell_length_b   2.68
_cell_length_c   9.25
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   119.12
_symmetry_Int_Tables_number   1
_chemical_formula_structural   RuRh
_chemical_formula_sum   'Ru2 Rh2'
_cell_volume   58.26
_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
  Ru  Ru2  1  0.36  0.84  0.49  1.0
  Ru  Ru3  1  0.36  0.16  0.76  1.0
  Rh  Rh0  1  0.36  0.84  0.08  1.0
  Rh  Rh1  1  0.36  0.16  0.18  1.0

data_RuRh
_symmetry_space_group_name_H-M   C2/m
_cell_length_a   2.68
_cell_length_b   4.69
_cell_length_c   9.25
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   12
_chemical_formula_structural   RuRh
_chemical_formula_sum   'Ru4 Rh4'
_cell_volume   116.53
_cell_formula_units_Z   4
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+1/2, y+1/2, z'
  6  '-x+1/2, -y+1/2, -z'
  7  '-x+1/2, y+1/2, -z'
  8  '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
  Ru  Ru0  4  0.16  0.0  0.64  1.0
  Rh  Rh1  4  0.16  0.0  0.05  1.0

Ru Ru Rh Rh
Ru Ru Rh Rh 0 0 + + o 0 0 o + o 0 0 + o o 0 3 o + o 0 1 o + o 0 1 o o o 1 1 + + o 1 1 o + o 1 1 + o o 1 2 o - + 2 3 o + o 
RhRu crystallizes in the triclinic P-1 space group. Ru(1) is bonded in a 8-coordinate geometry to seven equivalent Ru(1) and one Rh(1) atom. There are a spread of Ru(1)-Ru(1) bond distances ranging from 2.64-2.72 Å. The Ru(1)-Rh(1) bond length is 3.04 Å. Rh(1) is bonded in a distorted single-bond geometry to one Ru(1) and one Rh(1) atom. The Rh(1)-Rh(1) bond length is 1.24 Å.