data_[Na6Fe4Ru2O12]
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
  Ru  2.2000  1.3000  0.6610
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [5.3331]
_cell_length_b [9.2294]
_cell_length_c [5.7035]
_cell_angle_alpha [90.0000]
_cell_angle_beta [108.1654]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na3Fe2RuO6]
_chemical_formula_sum '[Na6 Fe4 Ru2 O12]'
_cell_volume [266.7431]
_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  0.0000  0.1647  0.5000  1.0
  Na  Na1  2  0.0000  0.5000  0.5000  1.0
  Fe  Fe2  4  0.0000  0.3332  0.0000  1.0
  Ru  Ru3  2  0.0000  0.0000  0.0000  1.0
  O  O4  8  0.2364  0.1685  0.2034  1.0
  O  O5  4  0.2307  0.5000  0.2032  1.0
]