data_[Na8Bi8Pb6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Bi  2.0200  1.6000  1.0350
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.6326]
_cell_length_b [10.4366]
_cell_length_c [19.1547]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Na4Bi4Pb3]
_chemical_formula_sum '[Na8 Bi8 Pb6]'
_cell_volume [726.1960]
_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  0.0000  0.2066  0.3332  1.0
  Bi  Bi1  4  0.0000  0.2780  0.5000  1.0
  Bi  Bi2  4  0.0000  0.5000  0.2536  1.0
  Pb  Pb3  4  0.0000  0.0000  0.0964  1.0
  Pb  Pb4  2  0.0000  0.5000  0.0000  1.0
]