data_[Y8Np4N12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Y  1.2200  1.8000  1.0400
  Np  1.3600  1.7500  1.0000
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [13.2384]
_cell_length_b [3.4129]
_cell_length_c [8.4945]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.4265]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Y2NpN3]
_chemical_formula_sum '[Y8 Np4 N12]'
_cell_volume [361.9499]
_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
[
  Y  Y0  4  0.1676  0.0000  0.3355  1
  Y  Y1  4  0.1692  0.5000  0.8349  1
  Np  Np2  2  0.0000  0.0000  0.5000  1
  Np  Np3  2  0.0000  0.5000  0.0000  1
  N  N4  4  0.0273  0.0000  0.8038  1
  N  N5  4  0.1338  0.5000  0.5270  1
  N  N6  4  0.1863  0.5000  0.1335  1
]