data_[Na4Ac4F14]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ac  1.1000  1.9500  1.2600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Cmmm]
_cell_length_a [8.3472]
_cell_length_b [8.3558]
_cell_length_c [5.6605]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [65]
_chemical_formula_structural [Na2Ac2F7]
_chemical_formula_sum '[Na4 Ac4 F14]'
_cell_volume [394.8071]
_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  0.2361  0.5000  0.0000  1
  Ac  Ac1  4  0.0000  0.2525  0.5000  1
  F  F2  8  0.2500  0.2500  0.2590  1
  F  F3  4  0.0000  0.5000  0.2506  1
  F  F4  2  0.0000  0.0000  0.0000  1
]