data_NaTaPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.08
_cell_length_b   3.08
_cell_length_c   11.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.46
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTaPb2
_chemical_formula_sum   'Na1 Ta1 Pb2'
_cell_volume   109.79
_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
  Na  Na0  1  0.0  0.0  0.24  1.0
  Ta  Ta3  1  0.87  0.0  0.03  1.0
  Pb  Pb1  1  0.87  0.0  0.21  1.0
  Pb  Pb2  1  0.0  0.0  0.51  1.0

data_NaTaPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.08
_cell_length_b   3.08
_cell_length_c   11.99
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   105.46
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaTaPb2
_chemical_formula_sum   'Na1 Ta1 Pb2'
_cell_volume   109.79
_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
  Na  Na0  1  0.0  0.0  0.24  1.0
  Ta  Ta1  1  0.87  0.0  0.03  1.0
  Pb  Pb2  1  0.0  0.0  0.51  1.0
  Pb  Pb3  1  0.87  0.0  0.21  1.0

Na Ta Pb Pb
Na Ta Pb Pb 0 2 - o o 0 1 - o o 0 3 o o o 1 2 o o o 2 3 + o o 3 3 o + o 3 3 + o o 
NaTaPb2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one NaTaPb2 cluster. Na(1) is bonded in a single-bond geometry to one Pb(1) and one Pb(2) atom. The Na(1)-Pb(1) bond length is 0.56 Å. The Na(1)-Pb(2) bond length is 3.20 Å. Ta(1) is bonded in a single-bond geometry to one Pb(1) atom. The Ta(1)-Pb(1) bond length is 2.17 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a single-bond geometry to one Na(1) and one Ta(1) atom. In the second Pb site, Pb(2) is bonded in a single-bond geometry to one Na(1) atom.