data_[Na8Ge4F16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ge  2.0100  1.2500  0.7700
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [Fmm2]
_cell_length_a [6.8480]
_cell_length_b [9.5345]
_cell_length_c [6.7426]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [42]
_chemical_formula_structural [Na2GeF4]
_chemical_formula_sum '[Na8 Ge4 F16]'
_cell_volume [440.2423]
_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  8  0.2500  0.2500  0.3031  1.0
  Ge  Ge1  4  0.0000  0.0000  0.5671  1.0
  F  F2  8  0.0000  0.2287  0.5451  1.0
  F  F3  8  0.1965  0.0000  0.3682  1.0
]