data_[Ce4U8Nb4N16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  U  1.3800  1.7500  0.9913
  Nb  1.6000  1.4500  0.8200
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.3611]
_cell_length_b [11.9154]
_cell_length_c [11.6995]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [CeU2NbN4]
_chemical_formula_sum '[Ce4 U8 Nb4 N16]'
_cell_volume [468.5492]
_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
[
  Ce  Ce0  4  0.0000  0.1130  0.7500  1
  U  U1  8  0.0000  0.3687  0.5472  1
  Nb  Nb2  4  0.0000  0.1507  0.2500  1
  N  N3  8  0.0000  0.2731  0.1154  1
  N  N4  4  0.0000  0.0000  0.0000  1
  N  N5  4  0.0000  0.4637  0.7500  1
]