data_[K4O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [4.1080]
_cell_length_b [7.9898]
_cell_length_c [4.3426]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.9267]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [K2O]
_chemical_formula_sum '[K4 O2]'
_cell_volume [132.2212]
_cell_formula_units_Z [2]
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  2  0.0826  0.1166  0.9625  1.0
  K  K1  2  0.3576  0.3712  0.5920  1.0
  O  O2  2  0.2901  0.7622  0.7579  1.0
]