data_SiRu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.64
_cell_length_b   4.64
_cell_length_c   4.24
_cell_angle_alpha   105.33
_cell_angle_beta   105.33
_cell_angle_gamma   36.25
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiRu
_chemical_formula_sum   'Si2 Ru2'
_cell_volume   51.95
_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
  Si  Si2  1  0.55  0.0  0.32  1.0
  Si  Si3  1  0.09  0.0  0.76  1.0
  Ru  Ru0  1  0.96  0.0  0.86  1.0
  Ru  Ru1  1  0.69  0.0  0.22  1.0

data_SiRu
_symmetry_space_group_name_H-M   P-1
_cell_length_a   2.89
_cell_length_b   4.24
_cell_length_c   4.64
_cell_angle_alpha   105.33
_cell_angle_beta   108.12
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   2
_chemical_formula_structural   SiRu
_chemical_formula_sum   'Si2 Ru2'
_cell_volume   51.95
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-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  Si0  2  0.0  0.28  0.23  1.0
  Ru  Ru1  2  0.0  0.18  0.37  1.0

Si Si Ru Ru
Si Si Ru Ru 0 3 o o o 1 2 - o o 
RuSi is alpha carbon monoxide-like structured and crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two RuSi clusters. Ru(1) is bonded in a single-bond geometry to one Si(1) atom. The Ru(1)-Si(1) bond length is 0.85 Å. Si(1) is bonded in a single-bond geometry to one Ru(1) atom.