data_[Na8Ag8Cl20]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [17.8329]
_cell_length_b [7.2238]
_cell_length_c [7.3757]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Na2Ag2Cl5]
_chemical_formula_sum '[Na8 Ag8 Cl20]'
_cell_volume [950.1433]
_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  8  0.1156  0.5482  0.9434  1.0
  Ag  Ag1  4  0.0000  0.0000  0.0511  1.0
  Ag  Ag2  4  0.2500  0.0743  0.9100  1.0
  Cl  Cl3  8  0.0238  0.2435  0.3100  1.0
  Cl  Cl4  8  0.1408  0.5935  0.5671  1.0
  Cl  Cl5  4  0.2500  0.0913  0.5620  1.0
]