data_PtRhBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.3
_cell_length_b   3.3
_cell_length_c   6.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   PtRhBr2
_chemical_formula_sum   'Pt1 Rh1 Br2'
_cell_volume   72.99
_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
  Pt  Pt2  1  0.0  0.0  0.36  1.0
  Rh  Rh3  1  0.0  0.0  0.0  1.0
  Br  Br0  1  0.65  0.65  0.6  1.0
  Br  Br1  1  0.65  0.65  0.12  1.0

data_PtRhBr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.66
_cell_length_b   4.66
_cell_length_c   6.72
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   PtRhBr2
_chemical_formula_sum   'Pt2 Rh2 Br4'
_cell_volume   145.98
_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
  Rh  Rh0  2  0.0  0.0  0.0  1.0
  Pt  Pt1  2  0.0  0.0  0.36  1.0
  Br  Br2  2  0.15  0.5  0.12  1.0
  Br  Br3  2  0.15  0.5  0.6  1.0

Pt Rh Br Br
RhPtBr2 crystallizes in the monoclinic Cm space group. Rh(1) is bonded in a distorted single-bond geometry to one Br(1) and one Br(2) atom. The Rh(1)-Br(1) bond length is 3.15 Å. The Rh(1)-Br(2) bond length is 1.82 Å. Pt(1) is bonded in a 2-coordinate geometry to one Br(2) and three equivalent Br(1) atoms. The Pt(1)-Br(2) bond length is 2.31 Å. There is one shorter (2.31 Å) and two longer (2.92 Å) Pt(1)-Br(1) bond lengths. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a distorted single-bond geometry to one Rh(1) and three equivalent Pt(1) atoms. In the second Br site, Br(2) is bonded in a 1-coordinate geometry to one Rh(1) and one Pt(1) atom.