data_[Na16Ag4Pb2]
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 [9.1306]
_cell_length_b [13.5696]
_cell_length_c [5.6785]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.7812]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na8Ag2Pb]
_chemical_formula_sum '[Na16 Ag4 Pb2]'
_cell_volume [677.0401]
_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  0.1862  0.1220  0.0806  1.0
  Na  Na1  4  0.0000  0.2377  0.5000  1.0
  Na  Na2  4  0.1308  0.5000  0.3274  1.0
  Ag  Ag3  4  0.0000  0.3221  0.0000  1.0
  Pb  Pb4  2  0.0000  0.0000  0.5000  1.0
]