data_[Cs8Na8Pb2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Na  0.9300  1.8000  1.1600
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [P4_2/nmc]
_cell_length_a [12.0776]
_cell_length_b [12.0776]
_cell_length_c [8.6974]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [137]
_chemical_formula_structural [Cs4Na4Pb]
_chemical_formula_sum '[Cs8 Na8 Pb2]'
_cell_volume [1268.6739]
_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
[
  Cs  Cs0  8  0.0000  0.2501  0.6821  1
  Na  Na1  8  0.0000  0.2346  0.1579  1
  Pb  Pb2  2  0.0000  0.0000  0.0000  1
]