data_[Na8Ag4Pb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ag  1.9300  1.6000  1.0867
  Pb  2.3300  1.8000  1.1225
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.4468]
_cell_length_b [5.0747]
_cell_length_c [10.3891]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.3170]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na2AgPb2]
_chemical_formula_sum '[Na8 Ag4 Pb8]'
_cell_volume [569.5231]
_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  0.0415  0.5000  0.3527  1.0
  Na  Na1  4  0.1658  0.5000  0.0744  1.0
  Ag  Ag2  4  0.2281  0.0000  0.3285  1.0
  Pb  Pb3  4  0.0242  0.0000  0.8604  1.0
  Pb  Pb4  4  0.1434  0.0000  0.5939  1.0
]