data_NaHgPb2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.41
_cell_length_b   6.41
_cell_length_c   6.41
_cell_angle_alpha   144.8
_cell_angle_beta   129.06
_cell_angle_gamma   63.43
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaHgPb2
_chemical_formula_sum   'Na1 Hg1 Pb2'
_cell_volume   116.52
_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  Na1  1  0.0  0.0  0.74  1.0
  Hg  Hg0  1  0.0  0.76  0.0  1.0
  Pb  Pb2  1  0.0  0.76  0.44  1.0
  Pb  Pb3  1  0.0  0.0  0.18  1.0

data_NaHgPb2
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.88
_cell_length_b   5.51
_cell_length_c   6.41
_cell_angle_alpha   115.47
_cell_angle_beta   107.6
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaHgPb2
_chemical_formula_sum   'Na1 Hg1 Pb2'
_cell_volume   116.52
_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  0.26  0.26  0.26  1.0
  Hg  Hg1  1  1.0  0.76  0.76  1.0
  Pb  Pb2  1  0.56  0.31  0.31  1.0
  Pb  Pb3  1  0.82  0.82  0.82  1.0

Na Hg Pb Pb
Na Hg Pb Pb 0 2 o - o 1 3 o + o 
NaPbHg(Pb) crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one Hg(Pb) cluster and one NaPb cluster. In the Hg(Pb) cluster, Hg(1) is bonded in a single-bond geometry to one Pb(2) atom. The Hg(1)-Pb(2) bond length is 0.91 Å. Pb(2) is bonded in a distorted single-bond geometry to one Hg(1) atom. In the NaPb cluster, Na(1) is bonded in a distorted single-bond geometry to one Pb(1) atom. The Na(1)-Pb(1) bond length is 1.08 Å. Pb(1) is bonded in a distorted single-bond geometry to one Na(1) atom.