data_Lu(SiRh)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.71
_cell_length_b   5.71
_cell_length_c   5.71
_cell_angle_alpha   138.47
_cell_angle_beta   138.47
_cell_angle_gamma   60.18
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Lu(SiRh)2
_chemical_formula_sum   'Lu1 Si2 Rh2'
_cell_volume   80.91
_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
  Lu  Lu0  1  0.0  0.0  0.0  1.0
  Si  Si1  1  0.0  0.0  0.13  1.0
  Si  Si2  1  0.0  0.0  0.75  1.0
  Rh  Rh3  1  0.0  0.02  0.47  1.0
  Rh  Rh4  1  0.02  0.0  0.47  1.0

data_Lu(SiRh)2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   5.72
_cell_length_b   5.72
_cell_length_c   5.71
_cell_angle_alpha   90.0
_cell_angle_beta   120.09
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Lu(SiRh)2
_chemical_formula_sum   'Lu2 Si4 Rh4'
_cell_volume   161.83
_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
  Lu  Lu0  2  0.0  0.0  0.0  1.0
  Si  Si1  2  0.25  0.0  0.25  1.0
  Si  Si2  2  0.37  0.5  0.87  1.0
  Rh  Rh3  4  0.04  0.49  0.55  1.0

Lu Si Si Rh Rh
LuRh2Si2 crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two rhodium molecules and two LuSi2 clusters. In each LuSi2 cluster, Lu(1) is bonded in a linear geometry to one Si(1) and one Si(2) atom. The Lu(1)-Si(1) bond length is 0.75 Å. The Lu(1)-Si(2) bond length is 1.44 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one Lu(1) atom. In the second Si site, Si(2) is bonded in a distorted single-bond geometry to one Lu(1) atom.