data_[Na8Hg8Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Hg  2.0000  1.5000  1.2450
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P4_2/n]
_cell_length_a [9.1591]
_cell_length_b [9.1591]
_cell_length_c [6.0658]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [86]
_chemical_formula_structural [Na4Hg4Pb]
_chemical_formula_sum '[Na8 Hg8 Pb2]'
_cell_volume [508.8508]
_cell_formula_units_Z [2]
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  8  0.0769  0.3278  0.8659  1.0
  Hg  Hg1  8  0.1030  0.2072  0.3834  1.0
  Pb  Pb2  2  0.0000  0.0000  0.0000  1.0
]