data_[K4Na4O4]
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 [8.7640]
_cell_length_b [3.9713]
_cell_length_c [6.8487]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.6331]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [KNaO]
_chemical_formula_sum '[K4 Na4 O4]'
_cell_volume [229.5441]
_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  0.1173  0.5000  0.3574  1
  Na  Na1  4  0.1555  0.0000  0.8949  1
  O  O2  4  0.2157  0.5000  0.7629  1
]