data_[Na4N4F4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  N  3.0400  0.6500  0.6300
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [8.8137]
_cell_length_b [3.2988]
_cell_length_c [6.4749]
_cell_angle_alpha [90.0000]
_cell_angle_beta [94.6387]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [NaNF]
_chemical_formula_sum '[Na4 N4 F4]'
_cell_volume [187.6371]
_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
[
  Na  Na0  4  0.3677  0.7497  0.1115  1
  N  N1  4  0.0560  0.5637  0.0297  1
  F  F2  4  0.3650  0.2495  0.8609  1
]