data_[Cs8Rb8Na20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Cs  0.7900  2.6000  1.8100
  Rb  0.8200  2.3500  1.6600
  Na  0.9300  1.8000  1.1600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [18.4849]
_cell_length_b [9.8739]
_cell_length_c [12.5099]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [Cs2Rb2Na5]
_chemical_formula_sum '[Cs8 Rb8 Na20]'
_cell_volume [2283.2734]
_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  0.0088  0.4872  1.0
  Rb  Rb1  4  0.0000  0.0000  0.8848  1.0
  Rb  Rb2  4  0.2500  0.5156  0.3809  1.0
  Na  Na3  8  0.0475  0.1651  0.1881  1.0
  Na  Na4  8  0.1502  0.6608  0.6791  1.0
  Na  Na5  4  0.2500  0.1667  0.1895  1.0
]