data_SiIr2Ru
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.63
_cell_length_b   4.63
_cell_length_c   4.63
_cell_angle_alpha   130.95
_cell_angle_beta   130.95
_cell_angle_gamma   71.89
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiIr2Ru
_chemical_formula_sum   'Si1 Ir2 Ru1'
_cell_volume   55.48
_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
  Si  Si3  1  0.0  0.0  0.0  1.0
  Ir  Ir0  1  0.92  0.0  0.88  1.0
  Ir  Ir1  1  0.0  0.92  0.88  1.0
  Ru  Ru2  1  0.0  0.0  0.75  1.0

data_SiIr2Ru
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.44
_cell_length_b   5.44
_cell_length_c   4.63
_cell_angle_alpha   90.0
_cell_angle_beta   125.94
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SiIr2Ru
_chemical_formula_sum   'Si2 Ir4 Ru2'
_cell_volume   110.96
_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
  Si  Si0  2  0.0  0.0  0.0  1.0
  Ir  Ir1  4  0.04  0.96  0.95  1.0
  Ru  Ru2  2  0.0  0.0  0.75  1.0

Si Ir Ir Ru
RuIr2Si is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two RuIr2Si clusters. Ru(1) is bonded in a 2-coordinate geometry to two equivalent Ir(1) atoms. Both Ru(1)-Ir(1) bond lengths are 0.85 Å. Ir(1) is bonded in a 2-coordinate geometry to one Ru(1), one Ir(1), and one Si(1) atom. The Ir(1)-Ir(1) bond length is 0.42 Å. The Ir(1)-Si(1) bond length is 0.44 Å. Si(1) is bonded in a 2-coordinate geometry to two equivalent Ir(1) atoms.