data_[K8Rb20]
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
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [22.7368]
_cell_length_b [8.3188]
_cell_length_c [12.8815]
_cell_angle_alpha [90.0000]
_cell_angle_beta [93.9382]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [K2Rb5]
_chemical_formula_sum '[K8 Rb20]'
_cell_volume [2430.6831]
_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
[
  K  K0  8  0.0698  0.3361  0.1083  1.0
  Rb  Rb1  8  0.1387  0.1674  0.4629  1.0
  Rb  Rb2  8  0.2151  0.3401  0.8235  1.0
  Rb  Rb3  4  0.0000  0.1726  0.7500  1.0
]