data_[Na4Np4I4Cl16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Np  1.3600  1.7500  1.0000
  I  2.6600  1.4000  1.2733
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [12.2540]
_cell_length_b [8.9901]
_cell_length_c [10.9432]
_cell_angle_alpha [90.0000]
_cell_angle_beta [114.8087]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaNpICl4]
_chemical_formula_sum '[Na4 Np4 I4 Cl16]'
_cell_volume [1094.2969]
_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
[
  Na  Na0  4  0.1181  0.5000  0.3887  1
  Np  Np1  4  0.1355  0.0000  0.2194  1
  I  I2  4  0.1420  0.0000  0.9390  1
  Cl  Cl3  8  0.1287  0.2857  0.2109  1
  Cl  Cl4  4  0.1296  0.5000  0.6584  1
  Cl  Cl5  4  0.1297  0.0000  0.4505  1
]