data_TaBiPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.11
_cell_length_b   6.11
_cell_length_c   6.11
_cell_angle_alpha   136.63
_cell_angle_beta   136.63
_cell_angle_gamma   63.01
_symmetry_Int_Tables_number   1
_chemical_formula_structural   TaBiPb2
_chemical_formula_sum   'Ta1 Bi1 Pb2'
_cell_volume   106.08
_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  Ta3  1  0.0  0.0  0.0  1.0
  Bi  Bi0  1  0.0  0.0  0.21  1.0
  Pb  Pb1  1  0.0  0.26  0.6  1.0
  Pb  Pb2  1  0.26  0.0  0.6  1.0

data_TaBiPb2
_symmetry_space_group_name_H-M   Cm
_cell_length_a   6.38
_cell_length_b   6.38
_cell_length_c   6.11
_cell_angle_alpha   90.0
_cell_angle_beta   121.5
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   TaBiPb2
_chemical_formula_sum   'Ta2 Bi2 Pb4'
_cell_volume   212.16
_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
  Ta  Ta0  2  0.0  0.0  0.0  1.0
  Bi  Bi1  2  0.29  0.5  0.79  1.0
  Pb  Pb2  4  0.02  0.37  0.65  1.0

Ta Bi Pb Pb
TaPb2Bi is Indium-like structured and crystallizes in the monoclinic Cm space group. The structure is zero-dimensional and consists of two TaPb2Bi clusters. Ta(1) is bonded in a single-bond geometry to one Bi(1) atom. The Ta(1)-Bi(1) bond length is 1.27 Å. Pb(1) is bonded in a 1-coordinate geometry to one Bi(1) atom. The Pb(1)-Bi(1) bond length is 1.67 Å. Bi(1) is bonded in a 3-coordinate geometry to one Ta(1) and two equivalent Pb(1) atoms.