data_[Na4Hg4Bi2Pb2]
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
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [6.8527]
_cell_length_b [6.1995]
_cell_length_c [8.3008]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.3057]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Na2Hg2BiPb]
_chemical_formula_sum '[Na4 Hg4 Bi2 Pb2]'
_cell_volume [352.5546]
_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  2  0.2521  0.7500  0.6533  1.0
  Na  Na1  2  0.4945  0.7500  0.2866  1.0
  Hg  Hg2  4  0.2582  0.0006  0.9916  1.0
  Bi  Bi3  2  0.2423  0.2500  0.3669  1.0
  Pb  Pb4  2  0.0079  0.7500  0.2942  1.0
]