data_[Na4Cu4Ag4F20]
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 [C2/c]
_cell_length_a [6.4303]
_cell_length_b [9.6314]
_cell_length_c [7.6132]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.9503]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaCuAgF5]
_chemical_formula_sum '[Na4 Cu4 Ag4 F20]'
_cell_volume [453.3531]
_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  4  0.0000  0.2940  0.2500  1.0
  Cu  Cu1  4  0.0000  0.0000  0.0000  1.0
  Ag  Ag2  4  0.0000  0.3582  0.7500  1.0
  F  F3  8  0.0304  0.1978  0.9619  1.0
  F  F4  8  0.1878  0.4736  0.4229  1.0
  F  F5  4  0.0000  0.0551  0.2500  1.0
]