data_[Na2Fe4F12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Fe  1.8300  1.4000  0.8525
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Pnnm]
_cell_length_a [4.7438]
_cell_length_b [5.4894]
_cell_length_c [9.0877]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [58]
_chemical_formula_structural [NaFe2F6]
_chemical_formula_sum '[Na2 Fe4 F12]'
_cell_volume [236.6481]
_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  0.0000  0.0000  0.5000  1.0
  Fe  Fe1  4  0.0000  0.5000  0.3199  1.0
  F  F2  8  0.2458  0.1877  0.3155  1.0
  F  F3  4  0.2019  0.6391  0.5000  1.0
]