data_[K4Na4O8]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cc]
_cell_length_a [5.9091]
_cell_length_b [6.4792]
_cell_length_c [7.5870]
_cell_angle_alpha [90.0000]
_cell_angle_beta [91.6754]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [9]
_chemical_formula_structural [KNaO2]
_chemical_formula_sum '[K4 Na4 O8]'
_cell_volume [290.3544]
_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  0.0326  0.0487  0.4814  1
  Na  Na1  4  0.0424  0.4620  0.2044  1
  O  O2  4  0.3367  0.2457  0.2725  1
  O  O3  4  0.4548  0.1599  0.4387  1
]