data_TaTlPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.03
_cell_length_b   6.03
_cell_length_c   6.03
_cell_angle_alpha   136.94
_cell_angle_beta   136.94
_cell_angle_gamma   62.54
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaTlPb2
_chemical_formula_sum   'Ta1 Tl1 Pb2'
_cell_volume   100.77
_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
  Ta  Ta2  1  0.0  0.0  0.0  1.0
  Tl  Tl3  1  0.21  0.0  0.58  1.0
  Pb  Pb0  1  0.0  0.0  0.15  1.0
  Pb  Pb1  1  0.0  0.21  0.58  1.0

data_TaTlPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   4.42
_cell_length_b   4.42
_cell_length_c   6.03
_cell_angle_alpha   111.53
_cell_angle_beta   111.53
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaTlPb2
_chemical_formula_sum   'Ta1 Tl1 Pb2'
_cell_volume   100.77
_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
  Ta  Ta0  1  0.0  0.0  0.0  1.0
  Tl  Tl1  1  0.58  0.36  0.36  1.0
  Pb  Pb2  1  0.15  0.15  0.15  1.0
  Pb  Pb3  1  0.36  0.58  0.36  1.0

Ta Tl Pb Pb
TaTlPb2 is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one TaTlPb2 cluster. Ta(1) is bonded in a single-bond geometry to one Pb(1) atom. The Ta(1)-Pb(1) bond length is 0.91 Å. Tl(1) is bonded in a 2-coordinate geometry to one Pb(1) and one Pb(2) atom. The Tl(1)-Pb(1) bond length is 1.85 Å. The Tl(1)-Pb(2) bond length is 1.32 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a distorted single-bond geometry to one Ta(1) and one Tl(1) atom. In the second Pb site, Pb(2) is bonded in a single-bond geometry to one Tl(1) atom.