data_[Na2Ru4O16]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [11.2524]
_cell_length_b [6.1527]
_cell_length_c [6.1600]
_cell_angle_alpha [90.0000]
_cell_angle_beta [109.6135]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Na(RuO4)2]
_chemical_formula_sum '[Na2 Ru4 O16]'
_cell_volume [401.7295]
_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  0.0000  1
  Ru  Ru1  4  0.1949  0.0000  0.6842  1
  O  O2  8  0.1357  0.2255  0.7822  1
  O  O3  4  0.1425  0.5000  0.2104  1
  O  O4  4  0.1431  0.0000  0.3838  1
]