data_Tl2BiPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   10.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   104.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl2BiPb
_chemical_formula_sum   'Tl2 Bi1 Pb1'
_cell_volume   124.72
_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
  Tl  Tl2  1  0.11  0.0  0.01  1.0
  Tl  Tl3  1  0.0  0.0  0.07  1.0
  Bi  Bi0  1  0.11  0.0  0.38  1.0
  Pb  Pb1  1  0.0  0.0  0.73  1.0

data_Tl2BiPb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.46
_cell_length_b   3.46
_cell_length_c   10.79
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   104.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Tl2BiPb
_chemical_formula_sum   'Tl2 Bi1 Pb1'
_cell_volume   124.72
_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
  Tl  Tl0  1  0.0  0.0  0.07  1.0
  Tl  Tl1  1  0.11  0.0  0.01  1.0
  Bi  Bi2  1  0.11  0.0  0.38  1.0
  Pb  Pb3  1  0.0  0.0  0.73  1.0

Tl Tl Bi Pb
Tl Tl Bi Pb 0 1 o o o 0 2 o o o 0 3 o o - 1 2 o o o 1 3 o o - 2 2 o + o 2 2 + o o 2 3 o o o 3 3 o + o 3 3 + o o 
Tl2PbBi crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Tl2PbBi cluster. There are two inequivalent Tl sites. In the first Tl site, Tl(1) is bonded in a 2-coordinate geometry to one Tl(2) and one Pb(1) atom. The Tl(1)-Tl(2) bond length is 0.77 Å. The Tl(1)-Pb(1) bond length is 3.04 Å. In the second Tl site, Tl(2) is bonded in a distorted single-bond geometry to one Tl(1) and one Bi(1) atom. The Tl(2)-Bi(1) bond length is 3.40 Å. Pb(1) is bonded in a single-bond geometry to one Tl(1) atom. Bi(1) is bonded in a distorted single-bond geometry to one Tl(2) atom.