data_[K4Na12O8]
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 [C2/m]
_cell_length_a [14.2846]
_cell_length_b [3.7952]
_cell_length_c [8.9779]
_cell_angle_alpha [90.0000]
_cell_angle_beta [115.9346]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KNa3O2]
_chemical_formula_sum '[K4 Na12 O8]'
_cell_volume [437.7025]
_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  0.1096  0.0000  0.0428  1.0
  Na  Na1  4  0.0098  0.0000  0.3466  1.0
  Na  Na2  4  0.1429  0.5000  0.7067  1.0
  Na  Na3  4  0.1687  0.5000  0.4105  1.0
  O  O4  4  0.0166  0.5000  0.8079  1.0
  O  O5  4  0.1667  0.0000  0.5882  1.0
]