The structure described by (HoO8I)2O2 crystallizes in the monoclinic P2_1/c space group. The structure consists of two hydrogen peroxide molecules inside a HoO8I framework. In the HoO8I framework, Ho(1) is bonded to one O(3), one O(4), one O(6), one O(7), one O(9), and two equivalent O(1) atoms to form distorted HoO7 pentagonal bipyramids that share  a cornercorner with one I(1)O6 octahedra, edges with two equivalent I(1)O6 octahedra, and  an edgeedge with one Ho(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 38°. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. In the second O site, O(8) is bonded in a bent 120 degrees geometry to one O(4) and one I(1) atom. In the third O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ho(1) and one I(1) atom. In the fourth O site, O(9) is bonded in a bent 150 degrees geometry to one Ho(1) and one O(2) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one O(9) and one I(1) atom. In the sixth O site, O(3) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one Ho(1) and one O(8) atom. In the eighth O site, O(6) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. I(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form IO6 octahedra that share  a cornercorner with one Ho(1)O7 pentagonal bipyramid and edges with two equivalent Ho(1)O7 pentagonal bipyramids. is represented by the CIF card [CIF]
data_HoIO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.792
_cell_length_b   6.650
_cell_length_c   10.268
_cell_angle_alpha   58.550
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   628.650
_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
  Ho  Ho0  1  0.084  0.227  0.309  1.0
  Ho  Ho1  1  0.584  0.773  0.191  1.0
  Ho  Ho2  1  0.916  0.773  0.691  1.0
  Ho  Ho3  1  0.416  0.227  0.809  1.0
  I  I4  1  0.328  0.992  0.253  1.0
  I  I5  1  0.828  0.008  0.247  1.0
  I  I6  1  0.672  0.008  0.747  1.0
  I  I7  1  0.172  0.992  0.753  1.0
  O  O8  1  0.427  0.055  0.076  1.0
  O  O9  1  0.927  0.945  0.424  1.0
  O  O10  1  0.573  0.945  0.924  1.0
  O  O11  1  0.073  0.055  0.576  1.0
  O  O12  1  0.458  0.186  0.333  1.0
  O  O13  1  0.958  0.814  0.167  1.0
  O  O14  1  0.542  0.814  0.667  1.0
  O  O15  1  0.042  0.186  0.833  1.0
  O  O16  1  0.225  0.253  0.133  1.0
  O  O17  1  0.725  0.747  0.367  1.0
  O  O18  1  0.775  0.747  0.867  1.0
  O  O19  1  0.275  0.253  0.633  1.0
  O  O20  1  0.209  0.542  0.302  1.0
  O  O21  1  0.709  0.458  0.198  1.0
  O  O22  1  0.791  0.458  0.698  1.0
  O  O23  1  0.291  0.542  0.802  1.0
  O  O24  1  0.052  0.544  0.488  1.0
  O  O25  1  0.552  0.456  0.012  1.0
  O  O26  1  0.948  0.456  0.512  1.0
  O  O27  1  0.448  0.544  0.988  1.0
  O  O28  1  0.942  0.251  0.136  1.0
  O  O29  1  0.442  0.749  0.364  1.0
  O  O30  1  0.058  0.749  0.864  1.0
  O  O31  1  0.558  0.251  0.636  1.0
  O  O32  1  0.723  0.076  0.083  1.0
  O  O33  1  0.223  0.924  0.417  1.0
  O  O34  1  0.277  0.924  0.917  1.0
  O  O35  1  0.777  0.076  0.583  1.0
  O  O36  1  0.702  0.234  0.297  1.0
  O  O37  1  0.202  0.766  0.203  1.0
  O  O38  1  0.298  0.766  0.703  1.0
  O  O39  1  0.798  0.234  0.797  1.0
  O  O40  1  0.443  0.407  0.279  1.0
  O  O41  1  0.943  0.593  0.221  1.0
  O  O42  1  0.557  0.593  0.721  1.0
  O  O43  1  0.057  0.407  0.779  1.0
[/CIF]
.
The structure described by (HoO8I)2O2 crystallizes in the monoclinic P2_1/c space group. The structure consists of two hydrogen peroxide molecules inside a HoO8I framework. In the HoO8I framework, Ho(1) is bonded to one O(3), one O(4), one O(6), one O(7), one O(9), and two equivalent O(1) atoms to form distorted HoO7 pentagonal bipyramids that share  a cornercorner with one I(1)O6 octahedra, edges with two equivalent I(1)O6 octahedra, and  an edgeedge with one Ho(1)O7 pentagonal bipyramid. The corner-sharing octahedral tilt angles are 38°. There are eight inequivalent O sites. In the first O site, O(7) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. In the second O site, O(8) is bonded in a bent 120 degrees geometry to one O(4) and one I(1) atom. In the third O site, O(1) is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ho(1) and one I(1) atom. In the fourth O site, O(9) is bonded in a bent 150 degrees geometry to one Ho(1) and one O(2) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one O(9) and one I(1) atom. In the sixth O site, O(3) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one Ho(1) and one O(8) atom. In the eighth O site, O(6) is bonded in a water-like geometry to one Ho(1) and one I(1) atom. I(1) is bonded to one O(1), one O(2), one O(3), one O(6), one O(7), and one O(8) atom to form IO6 octahedra that share  a cornercorner with one Ho(1)O7 pentagonal bipyramid and edges with two equivalent Ho(1)O7 pentagonal bipyramids. is represented by the CIF card [CIF]
data_HoIO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   10.792
_cell_length_b   6.650
_cell_length_c   10.268
_cell_angle_alpha   58.550
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   628.650
_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
  Ho  Ho0  1  0.084  0.227  0.309  1.0
  Ho  Ho1  1  0.584  0.773  0.191  1.0
  Ho  Ho2  1  0.916  0.773  0.691  1.0
  Ho  Ho3  1  0.416  0.227  0.809  1.0
  I  I4  1  0.328  0.992  0.253  1.0
  I  I5  1  0.828  0.008  0.247  1.0
  I  I6  1  0.672  0.008  0.747  1.0
  I  I7  1  0.172  0.992  0.753  1.0
  O  O8  1  0.427  0.055  0.076  1.0
  O  O9  1  0.927  0.945  0.424  1.0
  O  O10  1  0.573  0.945  0.924  1.0
  O  O11  1  0.073  0.055  0.576  1.0
  O  O12  1  0.458  0.186  0.333  1.0
  O  O13  1  0.958  0.814  0.167  1.0
  O  O14  1  0.542  0.814  0.667  1.0
  O  O15  1  0.042  0.186  0.833  1.0
  O  O16  1  0.225  0.253  0.133  1.0
  O  O17  1  0.725  0.747  0.367  1.0
  O  O18  1  0.775  0.747  0.867  1.0
  O  O19  1  0.275  0.253  0.633  1.0
  O  O20  1  0.209  0.542  0.302  1.0
  O  O21  1  0.709  0.458  0.198  1.0
  O  O22  1  0.791  0.458  0.698  1.0
  O  O23  1  0.291  0.542  0.802  1.0
  O  O24  1  0.052  0.544  0.488  1.0
  O  O25  1  0.552  0.456  0.012  1.0
  O  O26  1  0.948  0.456  0.512  1.0
  O  O27  1  0.448  0.544  0.988  1.0
  O  O28  1  0.942  0.251  0.136  1.0
  O  O29  1  0.442  0.749  0.364  1.0
  O  O30  1  0.058  0.749  0.864  1.0
  O  O31  1  0.558  0.251  0.636  1.0
  O  O32  1  0.723  0.076  0.083  1.0
  O  O33  1  0.223  0.924  0.417  1.0
  O  O34  1  0.277  0.924  0.917  1.0
  O  O35  1  0.777  0.076  0.583  1.0
  O  O36  1  0.702  0.234  0.297  1.0
  O  O37  1  0.202  0.766  0.203  1.0
  O  O38  1  0.298  0.766  0.703  1.0
  O  O39  1  0.798  0.234  0.797  1.0
  O  O40  1  0.443  0.407  0.279  1.0
  O  O41  1  0.943  0.593  0.221  1.0
  O  O42  1  0.557  0.593  0.721  1.0
  O  O43  1  0.057  0.407  0.779  1.0
[/CIF]
.