data_[K12Rb4O2]
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 [12.8094]
_cell_length_b [11.3792]
_cell_length_c [9.9086]
_cell_angle_alpha [90.0000]
_cell_angle_beta [127.6614]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K6Rb2O]
_chemical_formula_sum '[K12 Rb4 O2]'
_cell_volume [1143.3457]
_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  8  0.1840  0.1679  0.6708  1.0
  K  K1  4  0.0400  0.0000  0.2622  1.0
  Rb  Rb2  4  0.0585  0.5000  0.7820  1.0
  O  O3  2  0.0000  0.0000  0.5000  1.0
]