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 [P1]
_cell_length_a [3.9432]
_cell_length_b [7.9923]
_cell_length_c [11.3559]
_cell_angle_alpha [101.8879]
_cell_angle_beta [95.1954]
_cell_angle_gamma [96.3714]
_symmetry_Int_Tables_number [1]
_chemical_formula_structural [K2RbO]
_chemical_formula_sum '[K4 Rb2 O2]'
_cell_volume [345.6660]
_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  1  0.2575  0.5404  0.3846  1.0
  Rb  Rb1  1  0.4363  0.6565  0.9711  1.0
  K  K2  1  0.4644  0.9993  0.7891  1.0
  K  K3  1  0.5521  0.0749  0.0729  1.0
  K  K4  1  0.8594  0.6580  0.6753  1.0
  Rb  Rb5  1  0.8793  0.9731  0.4860  1.0
  O  O6  1  0.3598  0.7863  0.5690  1.0
  O  O7  1  0.9755  0.8900  0.9269  1.0
]