data_[Na2Tb2Ru4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Tb  1.1000  1.7500  0.9815
  Ru  2.2000  1.3000  0.6610
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I-4]
_cell_length_a [5.2351]
_cell_length_b [5.2351]
_cell_length_c [11.5625]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [82]
_chemical_formula_structural [NaTb(RuO4)2]
_chemical_formula_sum '[Na2 Tb2 Ru4 O16]'
_cell_volume [316.8844]
_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  1.0
  Tb  Tb1  2  0.0000  0.5000  0.7500  1.0
  Ru  Ru2  2  0.0000  0.0000  0.5000  1.0
  Ru  Ru3  2  0.0000  0.5000  0.2500  1.0
  O  O4  8  0.1437  0.2481  0.5869  1.0
  O  O5  8  0.1612  0.7495  0.1708  1.0
]