data_[H20I8O8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  H  2.2000  0.2500  0.0000
  I  2.6600  1.4000  1.2733
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Ima2]
_cell_length_a [23.6582]
_cell_length_b [4.5200]
_cell_length_c [5.8949]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [46]
_chemical_formula_structural [H5(IO)2]
_chemical_formula_sum '[H20 I8 O8]'
_cell_volume [630.3647]
_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
[
  H  H0  8  0.0135  0.6543  0.5147  1
  H  H1  8  0.2134  0.6814  0.4462  1
  H  H2  4  0.2500  0.1321  0.0040  1
  I  I3  8  0.1423  0.5016  0.9541  1
  O  O4  4  0.0000  0.0000  0.9125  1
  O  O5  4  0.2500  0.5551  0.4177  1
]