data_[K4Rb2O2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [7.2130]
_cell_length_b [7.3161]
_cell_length_c [8.0322]
_cell_angle_alpha [101.0239]
_cell_angle_beta [98.3389]
_cell_angle_gamma [119.3020]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [K2RbO]
_chemical_formula_sum '[K4 Rb2 O2]'
_cell_volume [348.4347]
_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
[
  Rb  Rb0  2  0.0482  0.9218  0.2966  1.0
  K  K1  2  0.1757  0.6806  0.6942  1.0
  K  K2  2  0.4360  0.5398  0.3105  1.0
  O  O3  2  0.1699  0.3390  0.4980  1.0
]