data_[Ir10O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [20.9357]
_cell_length_b [8.8442]
_cell_length_c [6.1157]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [Ir5O9]
_chemical_formula_sum '[Ir10 O18]'
_cell_volume [1132.3812]
_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
[
  Ir  Ir0  8  0.3908  0.1540  0.8461  1
  Ir  Ir1  2  0.5000  0.0000  0.9188  1
  O  O2  8  0.3582  0.2375  0.1030  1
  O  O3  4  0.4337  0.0000  0.6520  1
  O  O4  4  0.5000  0.2085  0.8535  1
  O  O5  2  0.5000  0.0000  0.2062  1
]