data_[Ba6Na3N3]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ba  0.8900  2.1500  1.4900
  Na  0.9300  1.8000  1.1600
  N  3.0400  0.6500  0.6300
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [4.0197]
_cell_length_b [4.0197]
_cell_length_c [31.7193]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [Ba2NaN]
_chemical_formula_sum '[Ba6 Na3 N3]'
_cell_volume [443.8492]
_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  3  0.0000  0.0000  0.7145  1.0
  Ba  Ba1  3  0.0000  0.0000  0.9524  1.0
  Na  Na2  3  0.0000  0.0000  0.4998  1.0
  N  N3  3  0.0000  0.0000  0.3334  1.0
]