data_[Na36Cd3Pb21]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cd  1.6900  1.5500  1.0900
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [14.3553]
_cell_length_b [14.3553]
_cell_length_c [10.2403]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Na12CdPb7]
_chemical_formula_sum '[Na36 Cd3 Pb21]'
_cell_volume [1827.5569]
_cell_formula_units_Z [3]
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  18  0.0021  0.7694  0.5506  1
  Na  Na1  18  0.0711  0.8154  0.9372  1
  Cd  Cd2  3  0.0000  0.0000  0.0000  1
  Pb  Pb3  18  0.0360  0.8749  0.2403  1
  Pb  Pb4  3  0.0000  0.0000  0.5000  1
]