data_[Ba18W6N18O3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  W  2.3600  1.3500  0.7667
  N  3.0400  0.6500  0.6300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [8.1589]
_cell_length_b [8.1589]
_cell_length_c [17.4744]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Ba6W2N6O]
_chemical_formula_sum '[Ba18 W6 N18 O3]'
_cell_volume [1007.3933]
_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  18  0.0229  0.5913  0.2503  1
  W  W1  6  0.0000  0.0000  0.2445  1
  N  N2  18  0.0134  0.7796  0.7439  1
  O  O3  3  -0.0000  0.0000  0.5000  1
]