data_[Na2Cu1Ag1F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Cu  1.9000  1.3500  0.8200
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.8744]
_cell_length_b [5.0065]
_cell_length_c [7.3724]
_cell_angle_alpha [82.7735]
_cell_angle_beta [83.8835]
_cell_angle_gamma [83.6253]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Na2CuAgF8]
_chemical_formula_sum '[Na2 Cu1 Ag1 F8]'
_cell_volume [176.5961]
_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  0.4939  0.4975  0.7586  1.0
  Cu  Cu1  1  0.0000  0.0000  0.0000  1.0
  Ag  Ag2  1  0.0000  0.0000  0.5000  1.0
  F  F3  2  0.1602  0.1925  0.8042  1.0
  F  F4  2  0.1604  0.2073  0.2766  1.0
  F  F5  2  0.2905  0.7462  0.9949  1.0
  F  F6  2  0.3217  0.7266  0.4925  1.0
]