data_[K4Nb4Fe8O24]
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
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.3361]
_cell_length_b [11.9708]
_cell_length_c [6.5244]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.3568]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KNb(FeO3)2]
_chemical_formula_sum '[K4 Nb4 Fe8 O24]'
_cell_volume [664.2755]
_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  0.1062  0.7500  1.0
  Nb  Nb1  4  0.0000  0.1971  0.2500  1.0
  Fe  Fe2  8  0.1234  0.4281  0.6582  1.0
  O  O3  8  0.0858  0.2785  0.5195  1.0
  O  O4  8  0.1168  0.4530  0.9531  1.0
  O  O5  8  0.1439  0.0974  0.2157  1.0
]