data_[Cs12Rb20O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Rb  0.8200  2.3500  1.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [13.3400]
_cell_length_b [19.5370]
_cell_length_c [9.1943]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [Cs3Rb5O2]
_chemical_formula_sum '[Cs12 Rb20 O8]'
_cell_volume [2396.2625]
_cell_formula_units_Z [4]
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
[
  Cs  Cs0  8  0.2036  0.1254  0.5000  1.0
  Cs  Cs1  4  0.0000  0.0000  0.2500  1.0
  Rb  Rb2  8  0.0000  0.2144  0.2500  1.0
  Rb  Rb3  8  0.1999  0.1244  0.0000  1.0
  Rb  Rb4  4  0.0000  0.5000  0.2500  1.0
  O  O5  8  0.0014  0.1271  0.5000  1.0
]