data_[Na16Ag2Pb4]
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 [Cmmm]
_cell_length_a [9.8237]
_cell_length_b [12.7813]
_cell_length_c [5.4608]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na8AgPb2]
_chemical_formula_sum '[Na16 Ag2 Pb4]'
_cell_volume [685.6567]
_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  0.1683  0.1313  0.0000  1.0
  Na  Na1  4  0.0000  0.2451  0.5000  1.0
  Na  Na2  4  0.1687  0.5000  0.5000  1.0
  Ag  Ag3  2  0.0000  0.0000  0.5000  1.0
  Pb  Pb4  4  0.0000  0.3768  0.0000  1.0
]