data_[K12Ag8F28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Ag  1.9300  1.6000  1.0867
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Ccce]
_cell_length_a [6.1390]
_cell_length_b [21.1153]
_cell_length_c [6.0547]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [68]
_chemical_formula_structural [K3Ag2F7]
_chemical_formula_sum '[K12 Ag8 F28]'
_cell_volume [784.8566]
_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
[
  K  K0  8  0.0000  0.1828  0.5000  1
  K  K1  4  0.0000  0.0000  0.5000  1
  Ag  Ag2  8  0.0000  0.1002  0.0000  1
  F  F3  16  0.2199  0.0953  0.2803  1
  F  F4  8  0.0000  0.2020  0.0000  1
  F  F5  4  0.0000  0.0000  0.0000  1
]