data_[K6Rb4O4]
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 [C2/m]
_cell_length_a [16.2040]
_cell_length_b [3.7702]
_cell_length_c [11.5172]
_cell_angle_alpha [90.0000]
_cell_angle_beta [131.6669]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K3Rb2O2]
_chemical_formula_sum '[K6 Rb4 O4]'
_cell_volume [525.6121]
_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  4  0.1381  0.5000  0.8894  1.0
  Rb  Rb1  4  0.2268  0.0000  0.6961  1.0
  K  K2  2  0.0000  0.5000  0.0000  1.0
  O  O3  4  0.1698  0.0000  0.0754  1.0
]