data_[Na2Np4Cl12]
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
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [14.2971]
_cell_length_b [4.1275]
_cell_length_c [10.3014]
_cell_angle_alpha [90.0000]
_cell_angle_beta [105.1485]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaNp2Cl6]
_chemical_formula_sum '[Na2 Np4 Cl12]'
_cell_volume [586.7781]
_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
[
  Na  Na0  2  0.0000  0.0000  0.5000  1
  Np  Np1  4  0.1635  0.5000  0.8367  1
  Cl  Cl2  4  0.0296  0.0000  0.8035  1
  Cl  Cl3  4  0.1373  0.5000  0.5695  1
  Cl  Cl4  4  0.1980  0.5000  0.1202  1
]