data_[Cs20K8Na8]
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
  Na  0.9300  1.8000  1.1600
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [26.0387]
_cell_length_b [10.9914]
_cell_length_c [11.0361]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [Cs5(KNa)2]
_chemical_formula_sum '[Cs20 K8 Na8]'
_cell_volume [3158.5342]
_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  16  0.1229  0.1856  0.6855  1
  Cs  Cs1  4  0.0000  0.0000  0.0000  1
  K  K2  8  0.2325  0.0000  0.0000  1
  Na  Na3  8  0.0000  0.1122  0.3884  1
]