data_[Np3Cr3N6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Np  1.3600  1.7500  1.0000
  Cr  1.6600  1.4000  0.9400
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [3.1094]
_cell_length_b [3.1094]
_cell_length_c [16.2066]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [NpCrN2]
_chemical_formula_sum '[Np3 Cr3 N6]'
_cell_volume [135.6946]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.5030  1
  Cr  Cr1  3  0.0000  0.0000  0.3284  1
  N  N2  3  0.0000  0.0000  0.7359  1
  N  N3  3  0.0000  0.0000  0.9327  1
]