data_[K4Rb16O2]
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 [23.3585]
_cell_length_b [8.3106]
_cell_length_c [8.8259]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.4943]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [K2Rb8O]
_chemical_formula_sum '[K4 Rb16 O2]'
_cell_volume [1634.0794]
_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  4  0.0011  0.0000  0.7607  1.0
  Rb  Rb1  4  0.0793  0.5000  0.8403  1.0
  Rb  Rb2  4  0.0921  0.5000  0.2665  1.0
  K  K3  4  0.1891  0.0000  0.6178  1.0
  Rb  Rb4  4  0.2157  0.0000  0.1412  1.0
  O  O5  2  0.0000  0.5000  0.0000  1.0
]