data_[Cs8K8Na20]
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 [Ima2]
_cell_length_a [18.2140]
_cell_length_b [9.7539]
_cell_length_c [12.1902]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Cs2K2Na5]
_chemical_formula_sum '[Cs8 K8 Na20]'
_cell_volume [2165.6764]
_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  0.1251  0.5091  0.0122  1.0
  K  K1  4  0.0000  0.0000  0.1134  1.0
  K  K2  4  0.2500  0.0171  0.1201  1.0
  Na  Na3  8  0.0456  0.6691  0.3109  1.0
  Na  Na4  8  0.1512  0.1609  0.8228  1.0
  Na  Na5  4  0.2500  0.6707  0.3107  1.0
]