data_[Na4Hg2Bi2Pb2]
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 [7.6870]
_cell_length_b [4.7804]
_cell_length_c [7.8224]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.3631]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [Na2HgBiPb]
_chemical_formula_sum '[Na4 Hg2 Bi2 Pb2]'
_cell_volume [286.9542]
_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  0.1409  0.2500  0.4585  1.0
  Na  Na1  2  0.3273  0.2500  0.0443  1.0
  Hg  Hg2  2  0.0517  0.7500  0.1626  1.0
  Bi  Bi3  2  0.2484  0.7500  0.7537  1.0
  Pb  Pb4  2  0.4487  0.7500  0.3577  1.0
]