data_[Na8Sb4Pb4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sb  2.0500  1.4500  0.8300
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.7398]
_cell_length_b [8.2978]
_cell_length_c [10.8974]
_cell_angle_alpha [90.0000]
_cell_angle_beta [130.1200]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Na2SbPb]
_chemical_formula_sum '[Na8 Sb4 Pb4]'
_cell_volume [535.1813]
_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  4  0.1633  0.1682  0.5368  1.0
  Na  Na1  4  0.2747  0.5966  0.4790  1.0
  Sb  Sb2  4  0.3579  0.6609  0.2389  1.0
  Pb  Pb3  4  0.3177  0.0157  0.3107  1.0
]