data_Bi2TePb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.62
_cell_length_b   6.62
_cell_length_c   6.62
_cell_angle_alpha   145.78
_cell_angle_beta   129.08
_cell_angle_gamma   62.79
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Bi2TePb
_chemical_formula_sum   'Bi2 Te1 Pb1'
_cell_volume   125.47
_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
  Bi  Bi0  1  0.0  0.85  0.96  1.0
  Bi  Bi1  1  0.95  0.0  0.69  1.0
  Te  Te3  1  0.0  0.0  0.0  1.0
  Pb  Pb2  1  0.0  0.0  0.65  1.0

data_Bi2TePb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.9
_cell_length_b   5.69
_cell_length_c   6.62
_cell_angle_alpha   115.46
_cell_angle_beta   107.11
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Bi2TePb
_chemical_formula_sum   'Bi2 Te1 Pb1'
_cell_volume   125.47
_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
  Bi  Bi0  1  0.0  0.69  0.74  1.0
  Bi  Bi1  1  0.15  0.11  0.11  1.0
  Te  Te2  1  0.0  0.0  0.0  1.0
  Pb  Pb3  1  0.0  0.65  0.65  1.0

Bi Bi Te Pb
PbBi2Te is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one PbBi2Te cluster. Pb(1) is bonded in a single-bond geometry to one Bi(2) atom. The Pb(1)-Bi(2) bond length is 0.54 Å. There are two inequivalent Bi sites. In the first Bi site, Bi(1) is bonded in a single-bond geometry to one Te(1) atom. The Bi(1)-Te(1) bond length is 0.81 Å. In the second Bi site, Bi(2) is bonded in a distorted single-bond geometry to one Pb(1) and one Te(1) atom. The Bi(2)-Te(1) bond length is 1.84 Å. Te(1) is bonded in a distorted bent 150 degrees geometry to one Bi(1) and one Bi(2) atom.