data_[Na2As2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  As  2.1800  1.1500  0.6600
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.8950]
_cell_length_b [5.1477]
_cell_length_c [6.8980]
_cell_angle_alpha [111.1210]
_cell_angle_beta [109.9700]
_cell_angle_gamma [91.9128]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [NaAsF4]
_chemical_formula_sum '[Na2 As2 F8]'
_cell_volume [149.9454]
_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  2  0.4403  0.6622  0.7525  1
  As  As1  2  0.0342  0.8057  0.2402  1
  F  F2  2  0.2022  0.5477  0.3845  1
  F  F3  2  0.2208  0.0056  0.9223  1
  F  F4  2  0.2347  0.5145  0.9761  1
  F  F5  2  0.2401  0.1753  0.6246  1
]