The structure described by YbO9I crystallizes in the monoclinic P2_1/c space group. Yb(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(9), and two equivalent O(1) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a water-like geometry to one Yb(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 Yb(1) and one I(1) atom. In the fourth O site, O(9) is bonded in an L-shaped geometry to one Yb(1) and one O(2) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one O(5) and one O(9) atom. In the sixth O site, O(3) is bonded in a water-like geometry to one Yb(1) and one I(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one Yb(1) and one O(8) atom. In the eighth O site, O(5) is bonded in a water-like geometry to one Yb(1) and one O(2) atom. In the ninth O site, O(6) is bonded in a water-like geometry to one Yb(1) and one I(1) atom. I(1) is bonded in a square pyramidal geometry to one O(1), one O(3), one O(6), one O(7), and one O(8) atom. is represented by the CIF file [CIF]
data_YbIO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.020
_cell_length_b   7.116
_cell_length_c   10.905
_cell_angle_alpha   50.912
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   663.695
_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
  Yb  Yb0  1  0.091  0.227  0.300  1.0
  Yb  Yb1  1  0.591  0.773  0.200  1.0
  Yb  Yb2  1  0.909  0.773  0.700  1.0
  Yb  Yb3  1  0.409  0.227  0.800  1.0
  I  I4  1  0.322  0.976  0.239  1.0
  I  I5  1  0.822  0.024  0.261  1.0
  I  I6  1  0.678  0.024  0.761  1.0
  I  I7  1  0.178  0.976  0.739  1.0
  O  O8  1  0.423  0.075  0.067  1.0
  O  O9  1  0.923  0.925  0.433  1.0
  O  O10  1  0.577  0.925  0.933  1.0
  O  O11  1  0.077  0.075  0.567  1.0
  O  O12  1  0.450  0.327  0.285  1.0
  O  O13  1  0.950  0.673  0.215  1.0
  O  O14  1  0.550  0.673  0.715  1.0
  O  O15  1  0.050  0.327  0.785  1.0
  O  O16  1  0.228  0.252  0.111  1.0
  O  O17  1  0.728  0.748  0.389  1.0
  O  O18  1  0.772  0.748  0.889  1.0
  O  O19  1  0.272  0.252  0.611  1.0
  O  O20  1  0.235  0.530  0.290  1.0
  O  O21  1  0.735  0.470  0.210  1.0
  O  O22  1  0.765  0.470  0.710  1.0
  O  O23  1  0.265  0.530  0.790  1.0
  O  O24  1  0.930  0.451  0.341  1.0
  O  O25  1  0.430  0.549  0.159  1.0
  O  O26  1  0.070  0.549  0.659  1.0
  O  O27  1  0.570  0.451  0.841  1.0
  O  O28  1  0.939  0.257  0.137  1.0
  O  O29  1  0.439  0.743  0.363  1.0
  O  O30  1  0.061  0.743  0.863  1.0
  O  O31  1  0.561  0.257  0.637  1.0
  O  O32  1  0.751  0.068  0.090  1.0
  O  O33  1  0.251  0.932  0.410  1.0
  O  O34  1  0.249  0.932  0.910  1.0
  O  O35  1  0.749  0.068  0.590  1.0
  O  O36  1  0.689  0.274  0.247  1.0
  O  O37  1  0.189  0.726  0.253  1.0
  O  O38  1  0.311  0.726  0.753  1.0
  O  O39  1  0.811  0.274  0.747  1.0
  O  O40  1  0.518  0.299  0.392  1.0
  O  O41  1  0.018  0.701  0.108  1.0
  O  O42  1  0.482  0.701  0.608  1.0
  O  O43  1  0.982  0.299  0.892  1.0
[/CIF]
.
The structure described by YbO9I crystallizes in the monoclinic P2_1/c space group. Yb(1) is bonded in a 8-coordinate geometry to one O(3), one O(4), one O(5), one O(6), one O(7), one O(9), and two equivalent O(1) atoms. There are nine inequivalent O sites. In the first O site, O(7) is bonded in a water-like geometry to one Yb(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 Yb(1) and one I(1) atom. In the fourth O site, O(9) is bonded in an L-shaped geometry to one Yb(1) and one O(2) atom. In the fifth O site, O(2) is bonded in a bent 120 degrees geometry to one O(5) and one O(9) atom. In the sixth O site, O(3) is bonded in a water-like geometry to one Yb(1) and one I(1) atom. In the seventh O site, O(4) is bonded in a bent 120 degrees geometry to one Yb(1) and one O(8) atom. In the eighth O site, O(5) is bonded in a water-like geometry to one Yb(1) and one O(2) atom. In the ninth O site, O(6) is bonded in a water-like geometry to one Yb(1) and one I(1) atom. I(1) is bonded in a square pyramidal geometry to one O(1), one O(3), one O(6), one O(7), and one O(8) atom. is represented by the CIF file [CIF]
data_YbIO9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.020
_cell_length_b   7.116
_cell_length_c   10.905
_cell_angle_alpha   50.912
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   663.695
_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
  Yb  Yb0  1  0.091  0.227  0.300  1.0
  Yb  Yb1  1  0.591  0.773  0.200  1.0
  Yb  Yb2  1  0.909  0.773  0.700  1.0
  Yb  Yb3  1  0.409  0.227  0.800  1.0
  I  I4  1  0.322  0.976  0.239  1.0
  I  I5  1  0.822  0.024  0.261  1.0
  I  I6  1  0.678  0.024  0.761  1.0
  I  I7  1  0.178  0.976  0.739  1.0
  O  O8  1  0.423  0.075  0.067  1.0
  O  O9  1  0.923  0.925  0.433  1.0
  O  O10  1  0.577  0.925  0.933  1.0
  O  O11  1  0.077  0.075  0.567  1.0
  O  O12  1  0.450  0.327  0.285  1.0
  O  O13  1  0.950  0.673  0.215  1.0
  O  O14  1  0.550  0.673  0.715  1.0
  O  O15  1  0.050  0.327  0.785  1.0
  O  O16  1  0.228  0.252  0.111  1.0
  O  O17  1  0.728  0.748  0.389  1.0
  O  O18  1  0.772  0.748  0.889  1.0
  O  O19  1  0.272  0.252  0.611  1.0
  O  O20  1  0.235  0.530  0.290  1.0
  O  O21  1  0.735  0.470  0.210  1.0
  O  O22  1  0.765  0.470  0.710  1.0
  O  O23  1  0.265  0.530  0.790  1.0
  O  O24  1  0.930  0.451  0.341  1.0
  O  O25  1  0.430  0.549  0.159  1.0
  O  O26  1  0.070  0.549  0.659  1.0
  O  O27  1  0.570  0.451  0.841  1.0
  O  O28  1  0.939  0.257  0.137  1.0
  O  O29  1  0.439  0.743  0.363  1.0
  O  O30  1  0.061  0.743  0.863  1.0
  O  O31  1  0.561  0.257  0.637  1.0
  O  O32  1  0.751  0.068  0.090  1.0
  O  O33  1  0.251  0.932  0.410  1.0
  O  O34  1  0.249  0.932  0.910  1.0
  O  O35  1  0.749  0.068  0.590  1.0
  O  O36  1  0.689  0.274  0.247  1.0
  O  O37  1  0.189  0.726  0.253  1.0
  O  O38  1  0.311  0.726  0.753  1.0
  O  O39  1  0.811  0.274  0.747  1.0
  O  O40  1  0.518  0.299  0.392  1.0
  O  O41  1  0.018  0.701  0.108  1.0
  O  O42  1  0.482  0.701  0.608  1.0
  O  O43  1  0.982  0.299  0.892  1.0
[/CIF]
.