data_Rb2IrRh
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.44
_cell_length_b   5.44
_cell_length_c   5.44
_cell_angle_alpha   60.0
_cell_angle_beta   60.0
_cell_angle_gamma   60.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Rb2IrRh
_chemical_formula_sum   'Rb2 Ir1 Rh1'
_cell_volume   113.54
_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
  Rb  Rb1  1  0.92  0.92  0.92  1.0
  Rb  Rb2  1  0.76  0.76  0.76  1.0
  Ir  Ir0  1  0.84  0.84  0.84  1.0
  Rh  Rh3  1  0.0  0.0  0.0  1.0

data_Rb2IrRh
_symmetry_space_group_name_H-M   R3m
_cell_length_a   5.44
_cell_length_b   5.44
_cell_length_c   13.31
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   160
_chemical_formula_structural   Rb2IrRh
_chemical_formula_sum   'Rb6 Ir3 Rh3'
_cell_volume   340.62
_cell_formula_units_Z   3
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  '-y, -x, z'
  5  '-x+y, y, z'
  6  'x, x-y, z'
  7  'x+1/3, y+2/3, z+2/3'
  8  '-y+1/3, x-y+2/3, z+2/3'
  9  '-x+y+1/3, -x+2/3, z+2/3'
  10  '-y+1/3, -x+2/3, z+2/3'
  11  '-x+y+1/3, y+2/3, z+2/3'
  12  'x+1/3, x-y+2/3, z+2/3'
  13  'x+2/3, y+1/3, z+1/3'
  14  '-y+2/3, x-y+1/3, z+1/3'
  15  '-x+y+2/3, -x+1/3, z+1/3'
  16  '-y+2/3, -x+1/3, z+1/3'
  17  '-x+y+2/3, y+1/3, z+1/3'
  18  'x+2/3, x-y+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
  Rb  Rb0  3  0.0  0.0  0.08  1.0
  Rb  Rb1  3  0.0  0.0  0.24  1.0
  Ir  Ir2  3  0.0  0.0  0.16  1.0
  Rh  Rh3  3  0.0  0.0  0.0  1.0

Rb Rb Ir Rh
Rb Rb Ir Rh 0 2 o o o 0 3 + + + 1 2 o o o 
Rb2IrRh is Copper structured and crystallizes in the trigonal R3m space group. The structure is zero-dimensional and consists of three Rb2IrRh clusters. There are two inequivalent Rb sites. In the first Rb site, Rb(1) is bonded in a linear geometry to one Ir(1) and one Rh(1) atom. The Rb(1)-Ir(1) bond length is 1.04 Å. The Rb(1)-Rh(1) bond length is 1.04 Å. In the second Rb site, Rb(2) is bonded in a single-bond geometry to one Ir(1) atom. The Rb(2)-Ir(1) bond length is 1.04 Å. Ir(1) is bonded in a linear geometry to one Rb(1) and one Rb(2) atom. Rh(1) is bonded in a single-bond geometry to one Rb(1) atom.