data_[K4Nb8Ag4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Nb  1.6000  1.4500  0.8200
  Ag  1.9300  1.6000  1.0867
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [10.4686]
_cell_length_b [11.6508]
_cell_length_c [6.6707]
_cell_angle_alpha [90.0000]
_cell_angle_beta [112.8442]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KNb2AgO6]
_chemical_formula_sum '[K4 Nb8 Ag4 O24]'
_cell_volume [749.7831]
_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  4  0.0000  0.0982  0.2500  1.0
  Nb  Nb1  8  0.1522  0.4238  0.1870  1.0
  Ag  Ag2  4  0.0000  0.2265  0.7500  1.0
  O  O3  8  0.1025  0.2767  0.0968  1.0
  O  O4  8  0.1082  0.4654  0.4434  1.0
  O  O5  8  0.1599  0.0776  0.6972  1.0
]