data_[Ba6Nb3W6N18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Nb  1.6000  1.4500  0.8200
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R-3m]
_cell_length_a [6.1153]
_cell_length_b [6.1153]
_cell_length_c [17.8049]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [166]
_chemical_formula_structural [Ba2Nb(WN3)2]
_chemical_formula_sum '[Ba6 Nb3 W6 N18]'
_cell_volume [576.6388]
_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
[
  Ba  Ba0  6  0.0000  0.0000  0.2231  1.0
  Nb  Nb1  3  0.0000  0.0000  0.0000  1.0
  W  W2  6  0.0000  0.0000  0.4257  1.0
  N  N3  18  0.0086  0.5043  0.7364  1.0
]