data_[Cs2K8Rb8]
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 [I4/mmm]
_cell_length_a [14.8583]
_cell_length_b [14.8583]
_cell_length_c [6.9990]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [139]
_chemical_formula_structural [Cs(KRb)4]
_chemical_formula_sum '[Cs2 K8 Rb8]'
_cell_volume [1545.1612]
_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
[
  Cs  Cs0  2  0.0000  0.0000  0.0000  1.0
  Rb  Rb1  8  0.0000  0.3324  0.0000  1.0
  K  K2  8  0.1707  0.1707  0.5000  1.0
]