data_HgPb2Cl
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.53
_cell_length_b   3.53
_cell_length_c   10.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   115.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HgPb2Cl
_chemical_formula_sum   'Hg1 Pb2 Cl1'
_cell_volume   114.69
_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
  Hg  Hg1  1  0.0  0.0  0.1  1.0
  Pb  Pb2  1  0.88  0.0  0.78  1.0
  Pb  Pb3  1  0.88  0.0  0.42  1.0
  Cl  Cl0  1  0.0  0.0  0.0  1.0

data_HgPb2Cl
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.53
_cell_length_b   3.53
_cell_length_c   10.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   115.69
_symmetry_Int_Tables_number   1
_chemical_formula_structural   HgPb2Cl
_chemical_formula_sum   'Hg1 Pb2 Cl1'
_cell_volume   114.69
_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
  Hg  Hg0  1  0.0  0.0  0.1  1.0
  Pb  Pb1  1  0.88  0.0  0.42  1.0
  Pb  Pb2  1  0.88  0.0  0.78  1.0
  Cl  Cl3  1  0.0  0.0  0.0  1.0

Hg Pb Pb Cl
Hg Pb Pb Cl 0 3 o o o 0 2 - o o 1 3 + o + 1 2 o o o 2 2 + + o 2 2 o + o 2 2 + o o 
HgPb2Cl is Indium-like structured and crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one HgPb2Cl cluster. Hg(1) is bonded in a single-bond geometry to one Pb(2) and one Cl(1) atom. The Hg(1)-Pb(2) bond length is 3.29 Å. The Hg(1)-Cl(1) bond length is 1.00 Å. There are two inequivalent Pb sites. In the first Pb site, Pb(1) is bonded in a single-bond geometry to one Cl(1) atom. The Pb(1)-Cl(1) bond length is 2.30 Å. In the second Pb site, Pb(2) is bonded in a distorted single-bond geometry to one Hg(1) atom. Cl(1) is bonded in a distorted single-bond geometry to one Hg(1) and one Pb(1) atom.