data_[Na10Sb8Pb8]
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 [I4/m]
_cell_length_a [13.0716]
_cell_length_b [13.0716]
_cell_length_c [4.8381]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [87]
_chemical_formula_structural [Na5(SbPb)4]
_chemical_formula_sum '[Na10 Sb8 Pb8]'
_cell_volume [826.6636]
_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  0.1282  0.2042  0.5000  1
  Na  Na1  2  0.0000  0.0000  0.0000  1
  Sb  Sb2  8  0.0657  0.7648  0.0000  1
  Pb  Pb3  8  0.0898  0.6070  0.5000  1
]