data_[Na8Sr16Ag24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Fmmm]
_cell_length_a [8.2720]
_cell_length_b [9.9545]
_cell_length_c [17.1245]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [69]
_chemical_formula_structural [NaSr2Ag3]
_chemical_formula_sum '[Na8 Sr16 Ag24]'
_cell_volume [1410.0975]
_cell_formula_units_Z [8]
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  0.0000  0.0000  0.3346  1.0
  Sr  Sr1  8  0.2425  0.0000  0.0000  1.0
  Sr  Sr2  8  0.2500  0.2500  0.2500  1.0
  Ag  Ag3  16  0.0000  0.2454  0.0822  1.0
  Ag  Ag4  8  0.0000  0.0000  0.1645  1.0
]