data_[Na2Ru2F8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ru  2.2000  1.3000  0.6610
  F  3.9800  0.5000  0.7050
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [6.2350]
_cell_length_b [6.2350]
_cell_length_c [5.6358]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [NaRuF4]
_chemical_formula_sum '[Na2 Ru2 F8]'
_cell_volume [219.0923]
_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  0.5000  0.2500  1
  Ru  Ru1  2  0.0000  0.0000  0.5000  1
  F  F2  8  0.1642  0.7392  0.4956  1
]