data_Si2RhSe
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.41
_cell_length_b   3.41
_cell_length_c   6.72
_cell_angle_alpha   103.6
_cell_angle_beta   103.6
_cell_angle_gamma   58.93
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2RhSe
_chemical_formula_sum   'Si2 Rh1 Se1'
_cell_volume   64.25
_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  Si2  1  0.12  0.0  0.72  1.0
  Si  Si3  1  0.0  0.0  0.75  1.0
  Rh  Rh0  1  0.06  0.0  0.23  1.0
  Se  Se1  1  0.0  0.0  0.0  1.0

data_Si2RhSe
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.35
_cell_length_b   3.41
_cell_length_c   6.72
_cell_angle_alpha   103.6
_cell_angle_beta   90.0
_cell_angle_gamma   119.46
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Si2RhSe
_chemical_formula_sum   'Si2 Rh1 Se1'
_cell_volume   64.25
_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  0.0  0.88  0.28  1.0
  Si  Si1  1  0.0  1.0  0.25  1.0
  Rh  Rh2  1  0.0  0.94  0.77  1.0
  Se  Se3  1  0.0  0.0  0.0  1.0

Si Si Rh Se
RhSi2Se is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one RhSi2Se cluster. Rh(1) is bonded in a single-bond geometry to one Se(1) atom. The Rh(1)-Se(1) bond length is 1.53 Å. There are two inequivalent Si sites. In the first Si site, Si(1) is bonded in a single-bond geometry to one Si(2) atom. The Si(1)-Si(2) bond length is 0.51 Å. In the second Si site, Si(2) is bonded in a distorted bent 120 degrees geometry to one Si(1) and one Se(1) atom. The Si(2)-Se(1) bond length is 1.67 Å. Se(1) is bonded in a linear geometry to one Rh(1) and one Si(2) atom.