data_SnPbBr2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.09
_cell_length_b   10.09
_cell_length_c   10.09
_cell_angle_alpha   21.24
_cell_angle_beta   21.24
_cell_angle_gamma   21.24
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SnPbBr2
_chemical_formula_sum   'Sn1 Pb1 Br2'
_cell_volume   118.29
_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  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.0  0.0  0.8  1.0
  Br  Br0  1  0.0  0.0  0.41  1.0
  Br  Br1  1  0.0  0.0  0.18  1.0

data_SnPbBr2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.45
_cell_length_b   3.72
_cell_length_c   10.09
_cell_angle_alpha   90.0
_cell_angle_beta   102.29
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   SnPbBr2
_chemical_formula_sum   'Sn2 Pb2 Br4'
_cell_volume   236.58
_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  0.0  0.0  0.0  1.0
  Pb  Pb1  2  -0.0  0.0  0.2  1.0
  Br  Br2  2  -0.0  0.0  0.59  1.0
  Br  Br3  2  -0.0  0.0  0.82  1.0

Sn Pb Br Br
PbSnBr2 is Cyanogen Chloride-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two PbSnBr2 clusters. Pb(1) is bonded in a single-bond geometry to one Sn(1) atom. The Pb(1)-Sn(1) bond length is 2.07 Å. Sn(1) is bonded in a linear geometry to one Pb(1) and one Br(2) atom. The Sn(1)-Br(2) bond length is 1.82 Å. There are two inequivalent Br sites. In the first Br site, Br(1) is bonded in a single-bond geometry to one Br(2) atom. The Br(1)-Br(2) bond length is 2.31 Å. In the second Br site, Br(2) is bonded in a single-bond geometry to one Sn(1) and one Br(1) atom.