data_[Ir4Ru4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ir  2.2000  1.3500  0.7650
  Ru  2.2000  1.3000  0.6610
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [I4_1md]
_cell_length_a [6.4298]
_cell_length_b [6.4298]
_cell_length_c [6.3392]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [109]
_chemical_formula_structural [IrRuO4]
_chemical_formula_sum '[Ir4 Ru4 O16]'
_cell_volume [262.0750]
_cell_formula_units_Z [4]
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
[
  Ru  Ru0  4  0.0000  0.0000  0.0009  1.0
  Ir  Ir1  4  0.0000  0.0000  0.4990  1.0
  O  O2  8  0.0000  0.1922  0.7506  1.0
  O  O3  8  0.0000  0.1932  0.2494  1.0
]