data_[Nb2N2Cl2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Nb  1.6000  1.4500  0.8200
  N  3.0400  0.6500  0.6300
  Cl  3.1600  1.0000  0.7800
]
_symmetry_space_group_name_H-M [P2_1]
_cell_length_a [3.3993]
_cell_length_b [5.4851]
_cell_length_c [19.0539]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [4]
_chemical_formula_structural [NbNCl]
_chemical_formula_sum '[Nb2 N2 Cl2]'
_cell_volume [355.2689]
_cell_formula_units_Z [2]
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
[
  Nb  Nb0  2  0.1825  0.5361  0.5102  1
  N  N1  2  0.3262  0.8748  0.4626  1
  Cl  Cl2  2  0.0046  0.3425  0.3936  1
]