data_[Hg4Pb4Cl12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Ama2]
_cell_length_a [5.0452]
_cell_length_b [21.9109]
_cell_length_c [6.6870]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [40]
_chemical_formula_structural [HgPbCl3]
_chemical_formula_sum '[Hg4 Pb4 Cl12]'
_cell_volume [739.2070]
_cell_formula_units_Z [4]
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  4  0.2500  0.4158  0.1064  1
  Pb  Pb1  4  0.2500  0.1761  0.2095  1
  Cl  Cl2  4  0.2500  0.0844  0.5867  1
  Cl  Cl3  4  0.2500  0.2580  0.9044  1
  Cl  Cl4  4  0.2500  0.3778  0.5721  1
]