data_[Cs20K8Rb8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  K  0.8200  2.2000  1.5200
  Rb  0.8200  2.3500  1.6600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [24.7181]
_cell_length_b [16.4381]
_cell_length_c [9.3216]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Cs5(KRb)2]
_chemical_formula_sum '[Cs20 K8 Rb8]'
_cell_volume [3787.5290]
_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  0.0645  0.7209  0.3659  1.0
  Cs  Cs1  8  0.1505  0.1670  0.0544  1.0
  Cs  Cs2  4  0.2500  0.6201  0.7639  1.0
  Rb  Rb3  8  0.0944  0.0414  0.5687  1.0
  K  K4  4  0.0000  0.0000  0.1513  1.0
  K  K5  4  0.2500  0.5621  0.2708  1.0
]