data_[Na8Sr6Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [Immm]
_cell_length_a [3.8724]
_cell_length_b [5.4573]
_cell_length_c [34.8932]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [71]
_chemical_formula_structural [Na4Sr3Pb4]
_chemical_formula_sum '[Na8 Sr6 Pb8]'
_cell_volume [737.3782]
_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  4  0.0000  0.0000  0.4077  1.0
  Na  Na1  4  0.0000  0.5000  0.2584  1.0
  Sr  Sr2  4  0.0000  0.0000  0.1463  1.0
  Sr  Sr3  2  0.0000  0.5000  0.0000  1.0
  Pb  Pb4  4  0.0000  0.0000  0.3180  1.0
  Pb  Pb5  4  0.0000  0.5000  0.4532  1.0
]