data_[Na6Li6Hg6Pb3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Li  0.9800  1.4500  0.9000
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [5.0759]
_cell_length_b [5.0759]
_cell_length_c [21.6050]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Na2Li2Hg2Pb]
_chemical_formula_sum '[Na6 Li6 Hg6 Pb3]'
_cell_volume [482.0642]
_cell_formula_units_Z [3]
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  6  0.0000  0.0000  0.4244  1.0
  Li  Li1  6  0.0000  0.0000  0.2836  1.0
  Hg  Hg2  6  0.0000  0.0000  0.1480  1.0
  Pb  Pb3  3  0.0000  0.0000  0.0000  1.0
]