data_[Na16Ag4Pb4]
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 [Cmc2_1]
_cell_length_a [5.5025]
_cell_length_b [13.8341]
_cell_length_c [9.2026]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Na4AgPb]
_chemical_formula_sum '[Na16 Ag4 Pb4]'
_cell_volume [700.5164]
_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  0.0000  0.0329  0.8089  1.0
  Na  Na1  4  0.0000  0.1958  0.5210  1.0
  Na  Na2  4  0.0000  0.2949  0.8429  1.0
  Na  Na3  4  0.0000  0.4588  0.5453  1.0
  Ag  Ag4  4  0.0000  0.1508  0.1187  1.0
  Pb  Pb5  4  0.0000  0.3427  0.2299  1.0
]