data_[Np4W8N16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.1274]
_cell_length_b [10.1211]
_cell_length_c [10.1431]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Np(WN2)2]
_chemical_formula_sum '[Np4 W8 N16]'
_cell_volume [321.0603]
_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
[
  Np  Np0  4  0.0000  0.3849  0.2500  1
  W  W1  8  0.0000  0.1197  0.0638  1
  N  N2  8  0.0000  0.2356  0.6104  1
  N  N3  4  0.0000  0.0715  0.2500  1
  N  N4  4  0.0000  0.5000  0.0000  1
]