data_[Na2Si1Ag1F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-3m1]
_cell_length_a [5.0950]
_cell_length_b [5.0950]
_cell_length_c [6.9636]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [164]
_chemical_formula_structural [Na2SiAgF8]
_chemical_formula_sum '[Na2 Si1 Ag1 F8]'
_cell_volume [156.5515]
_cell_formula_units_Z [1]
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  2  0.3333  0.6667  0.8421  1
  Si  Si1  1  0.0000  0.0000  0.0000  1
  Ag  Ag2  1  0.0000  0.0000  0.5000  1
  F  F3  6  0.1568  0.3136  0.1431  1
  F  F4  2  0.3333  0.6667  0.5236  1
]