data_SnRh2Se
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.53
_cell_length_b   3.53
_cell_length_c   5.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnRh2Se
_chemical_formula_sum   'Sn1 Rh2 Se1'
_cell_volume   70.46
_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
  Sn  Sn3  1  0.77  0.77  0.52  1.0
  Rh  Rh0  1  0.0  0.0  0.57  1.0
  Rh  Rh1  1  0.77  0.77  0.7  1.0
  Se  Se2  1  0.0  0.0  0.34  1.0

data_SnRh2Se
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.99
_cell_length_b   4.99
_cell_length_c   5.65
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SnRh2Se
_chemical_formula_sum   'Sn2 Rh4 Se2'
_cell_volume   140.92
_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
  Sn  Sn0  2  0.27  0.5  0.52  1.0
  Rh  Rh1  2  0.0  0.0  0.57  1.0
  Rh  Rh2  2  0.27  0.5  0.7  1.0
  Se  Se3  2  0.0  0.0  0.34  1.0

Sn Rh Rh Se
Rh2SnSe is alpha Niobium phosphide-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Rh2SnSe clusters. There are two inequivalent Rh sites. In the first Rh site, Rh(1) is bonded in a 2-coordinate geometry to one Sn(1) and one Se(1) atom. The Rh(1)-Sn(1) bond length is 1.21 Å. The Rh(1)-Se(1) bond length is 1.27 Å. In the second Rh site, Rh(2) is bonded in a single-bond geometry to one Sn(1) atom. The Rh(2)-Sn(1) bond length is 1.04 Å. Sn(1) is bonded in a 3-coordinate geometry to one Rh(1), one Rh(2), and one Se(1) atom. The Sn(1)-Se(1) bond length is 1.53 Å. Se(1) is bonded in a 2-coordinate geometry to one Rh(1) and one Sn(1) atom.