data_[Na6Ti4O6F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ti  1.5400  1.4000  0.8517
  O  3.4400  0.6000  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Imm2]
_cell_length_a [3.8031]
_cell_length_b [19.8000]
_cell_length_c [4.0939]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [44]
_chemical_formula_structural [Na3Ti2O3F4]
_chemical_formula_sum '[Na6 Ti4 O6 F8]'
_cell_volume [308.2752]
_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
[
  Na  Na0  4  0.0000  0.1896  0.9359  1
  Na  Na1  2  0.0000  0.0000  0.0518  1
  Ti  Ti2  4  0.0000  0.4051  0.0015  1
  O  O3  4  0.0000  0.1051  0.4826  1
  O  O4  2  0.0000  0.5000  0.9952  1
  F  F5  4  0.0000  0.2986  0.0711  1
  F  F6  4  0.0000  0.4015  0.4994  1
]