data_[Na2Ag2F4]
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
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/m]
_cell_length_a [4.7631]
_cell_length_b [3.3549]
_cell_length_c [7.1510]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.9951]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [11]
_chemical_formula_structural [NaAgF2]
_chemical_formula_sum '[Na2 Ag2 F4]'
_cell_volume [113.8391]
_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  2  0.2650  0.2500  0.1144  1.0
  Ag  Ag1  2  0.2010  0.2500  0.6168  1.0
  F  F2  2  0.2352  0.7500  0.8873  1.0
  F  F3  2  0.2965  0.7500  0.3403  1.0
]