data_[Na2Hg4Bi2Pb4]
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 [Pmc2_1]
_cell_length_a [4.5754]
_cell_length_b [10.6480]
_cell_length_c [7.2264]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [26]
_chemical_formula_structural [NaHg2BiPb2]
_chemical_formula_sum '[Na2 Hg4 Bi2 Pb4]'
_cell_volume [352.0625]
_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  0.0000  0.4920  0.8859  1.0
  Hg  Hg1  2  0.0000  0.1789  0.9031  1.0
  Hg  Hg2  2  0.5000  0.3616  0.1342  1.0
  Bi  Bi3  2  0.5000  0.3112  0.6387  1.0
  Pb  Pb4  2  0.0000  0.1792  0.3717  1.0
  Pb  Pb5  2  0.5000  0.0018  0.6121  1.0
]