data_[Na8Ru2O10]
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 [I4]
_cell_length_a [7.2692]
_cell_length_b [7.2692]
_cell_length_c [4.9176]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [79]
_chemical_formula_structural [Na4RuO5]
_chemical_formula_sum '[Na8 Ru2 O10]'
_cell_volume [259.8515]
_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  8  0.0985  0.3010  0.5106  1.0
  Ru  Ru1  2  0.0000  0.0000  0.0610  1.0
  O  O2  8  0.0787  0.2486  0.9935  1.0
  O  O3  2  0.0000  0.0000  0.4331  1.0
]