data_[Cs2K4Np2F16]
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
  Np  1.3600  1.7500  1.0000
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I-4m2]
_cell_length_a [6.0894]
_cell_length_b [6.0894]
_cell_length_c [12.6450]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [119]
_chemical_formula_structural [CsK2NpF8]
_chemical_formula_sum '[Cs2 K4 Np2 F16]'
_cell_volume [468.8844]
_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  0.5000  1
  K  K1  2  0.0000  0.0000  0.0000  1
  K  K2  2  0.0000  0.5000  0.2500  1
  Np  Np3  2  0.0000  0.5000  0.7500  1
  F  F4  16  0.2055  0.2856  0.8506  1
]