data_[K4Na4Fe4O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Na  0.9300  1.8000  1.1600
  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 [5.7182]
_cell_length_b [11.3035]
_cell_length_c [5.3753]
_cell_angle_alpha [90.0000]
_cell_angle_beta [98.1518]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [KNaFeO3]
_chemical_formula_sum '[K4 Na4 Fe4 O12]'
_cell_volume [343.9261]
_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  0.2545  0.2500  1.0
  Na  Na1  4  0.0000  0.4197  0.7500  1.0
  Fe  Fe2  4  0.0000  0.0552  0.7500  1.0
  O  O3  8  0.2107  0.0379  0.5080  1.0
  O  O4  4  0.0000  0.2137  0.7500  1.0
]