data_[Na2Ru2Se4O16]
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
  Se  2.5500  1.1500  1.0133
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.5001]
_cell_length_b [5.5456]
_cell_length_c [7.2713]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.3000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [NaRu(SeO4)2]
_chemical_formula_sum '[Na2 Ru2 Se4 O16]'
_cell_volume [342.7563]
_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  0.5000  1
  Ru  Ru1  2  0.0000  0.0000  0.0000  1
  Se  Se2  4  0.1445  0.5000  0.7876  1
  O  O3  8  0.0196  0.2514  0.7964  1
  O  O4  4  0.2269  0.5000  0.5847  1
  O  O5  4  0.2383  0.0000  0.0200  1
]