data_[Ce8Ta4Nb4N20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ce  1.1200  1.8500  1.0800
  Ta  1.5000  1.4500  0.8200
  Nb  1.6000  1.4500  0.8200
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [Cmc2_1]
_cell_length_a [3.3635]
_cell_length_b [13.3870]
_cell_length_c [10.4819]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [36]
_chemical_formula_structural [Ce2TaNbN5]
_chemical_formula_sum '[Ce8 Ta4 Nb4 N20]'
_cell_volume [471.9670]
_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  0.1084  0.6894  1.0
  Ce  Ce1  4  0.0000  0.1457  0.2905  1.0
  Ta  Ta2  4  0.0000  0.2186  0.0093  1.0
  Nb  Nb3  4  0.0000  0.4721  0.4649  1.0
  N  N4  4  0.0000  0.0560  0.0625  1.0
  N  N5  4  0.0000  0.2777  0.6470  1.0
  N  N6  4  0.0000  0.3150  0.3803  1.0
  N  N7  4  0.0000  0.3698  0.0005  1.0
  N  N8  4  0.0000  0.4911  0.7796  1.0
]