data_Cd2PbBr
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.6
_cell_length_b   6.6
_cell_length_c   6.6
_cell_angle_alpha   140.54
_cell_angle_beta   140.54
_cell_angle_gamma   57.04
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Cd2PbBr
_chemical_formula_sum   'Cd2 Pb1 Br1'
_cell_volume   115.3
_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
  Cd  Cd1  1  0.23  0.0  0.9  1.0
  Cd  Cd2  1  0.0  0.23  0.9  1.0
  Pb  Pb3  1  0.0  0.0  0.8  1.0
  Br  Br0  1  0.0  0.0  0.0  1.0

data_Cd2PbBr
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.3
_cell_length_b   6.3
_cell_length_c   6.6
_cell_angle_alpha   90.0
_cell_angle_beta   118.52
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   Cd2PbBr
_chemical_formula_sum   'Cd4 Pb2 Br2'
_cell_volume   230.6
_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
  Cd  Cd0  4  0.29  0.39  0.67  1.0
  Pb  Pb1  2  0.3  0.5  0.8  1.0
  Br  Br2  2  0.0  0.0  0.0  1.0

Cd Cd Pb Br
Cd Cd Pb Br 0 2 o o o 1 2 o o o 2 3 o o + 
Cd2PbBr is Ammonia-derived structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two Cd2PbBr clusters. Cd(1) is bonded in a single-bond geometry to one Pb(1) atom. The Cd(1)-Pb(1) bond length is 1.09 Å. Pb(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cd(1) and one Br(1) atom. The Pb(1)-Br(1) bond length is 1.31 Å. Br(1) is bonded in a single-bond geometry to one Pb(1) atom.