data_[Na12Bi8Pb12]
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 [Cmcm]
_cell_length_a [5.0455]
_cell_length_b [11.9301]
_cell_length_c [17.5354]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Na3Bi2Pb3]
_chemical_formula_sum '[Na12 Bi8 Pb12]'
_cell_volume [1055.5093]
_cell_formula_units_Z [4]
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  0.0509  0.6132  1.0
  Na  Na1  4  0.0000  0.2872  0.7500  1.0
  Bi  Bi2  8  0.0000  0.2408  0.1270  1.0
  Pb  Pb3  8  0.0000  0.3701  0.5325  1.0
  Pb  Pb4  4  0.0000  0.4375  0.2500  1.0
]