data_SiBRh2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.44
_cell_length_b   4.44
_cell_length_c   4.44
_cell_angle_alpha   139.08
_cell_angle_beta   118.63
_cell_angle_gamma   76.42
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiBRh2
_chemical_formula_sum   'Si1 B1 Rh2'
_cell_volume   49.13
_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  0.49  1.0
  B  B0  1  0.0  0.0  0.0  1.0
  Rh  Rh1  1  0.55  0.0  0.39  1.0
  Rh  Rh2  1  0.0  0.27  0.1  1.0

data_SiBRh2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.11
_cell_length_b   4.44
_cell_length_c   4.44
_cell_angle_alpha   61.37
_cell_angle_beta   69.54
_cell_angle_gamma   69.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiBRh2
_chemical_formula_sum   'Si1 B1 Rh2'
_cell_volume   49.13
_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  Si0  1  0.49  0.0  0.51  1.0
  B  B1  1  0.0  0.0  0.0  1.0
  Rh  Rh2  1  0.1  -0.0  0.17  1.0
  Rh  Rh3  1  0.84  0.55  0.61  1.0

Si B Rh Rh
Rh2BSi crystallizes in the triclinic P1 space group. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 2-coordinate geometry to one B(1) and one Si(1) atom. The Rh(1)-B(1) bond length is 2.22 Å. The Rh(1)-Si(1) bond length is 1.82 Å. In the second Rh site, Rh(2) is bonded in a distorted single-bond geometry to one B(1) and two equivalent Si(1) atoms. The Rh(2)-B(1) bond length is 0.90 Å. There is one shorter (1.98 Å) and one longer (2.25 Å) Rh(2)-Si(1) bond length. B(1) is bonded in a single-bond geometry to one Rh(1), one Rh(2), and one Si(1) atom. The B(1)-Si(1) bond length is 2.18 Å. Si(1) is bonded in a 4-coordinate geometry to one Rh(1), two equivalent Rh(2), and one B(1) atom.