The compound described by Er(IO3)3 crystallizes in the monoclinic P2_1/c space group. Er(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(8), and two equivalent O(6) atoms. There are nine inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Er(1) and one I(3) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Er(1) and one I(3) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one I(1) and two equivalent I(3) atoms. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to one Er(1) and one I(2) atom. In the fifth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one I(1) atom. In the sixth O site, O(9) is bonded in a distorted single-bond geometry to one I(2) atom. In the seventh O site, O(2) is bonded in a bent 150 degrees geometry to one Er(1) and one I(1) atom. In the eighth O site, O(3) is bonded in a bent 120 degrees geometry to one Er(1) and one I(1) atom. In the ninth O site, O(4) is bonded in a bent 120 degrees geometry to one Er(1) and one I(2) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(7) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(4), one O(8), and one O(9) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(5), one O(6), and two equivalent O(7) atoms. is represented by the CIF card [CIF]
data_Er(IO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.999
_cell_length_b   8.643
_cell_length_c   16.342
_cell_angle_alpha   65.375
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   770.287
_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
  Er  Er0  1  0.287  0.353  0.105  1.0
  Er  Er1  1  0.787  0.647  0.395  1.0
  Er  Er2  1  0.713  0.647  0.895  1.0
  Er  Er3  1  0.213  0.353  0.605  1.0
  I  I4  1  0.812  0.577  0.143  1.0
  I  I5  1  0.312  0.423  0.357  1.0
  I  I6  1  0.188  0.423  0.857  1.0
  I  I7  1  0.688  0.577  0.643  1.0
  I  I8  1  0.599  0.082  0.300  1.0
  I  I9  1  0.099  0.918  0.200  1.0
  I  I10  1  0.401  0.918  0.700  1.0
  I  I11  1  0.901  0.082  0.800  1.0
  I  I12  1  0.652  0.144  0.021  1.0
  I  I13  1  0.152  0.856  0.479  1.0
  I  I14  1  0.348  0.856  0.979  1.0
  I  I15  1  0.848  0.144  0.521  1.0
  O  O16  1  0.605  0.406  0.170  1.0
  O  O17  1  0.105  0.594  0.330  1.0
  O  O18  1  0.395  0.594  0.830  1.0
  O  O19  1  0.895  0.406  0.670  1.0
  O  O20  1  0.869  0.622  0.027  1.0
  O  O21  1  0.369  0.378  0.473  1.0
  O  O22  1  0.131  0.378  0.973  1.0
  O  O23  1  0.631  0.622  0.527  1.0
  O  O24  1  0.057  0.443  0.186  1.0
  O  O25  1  0.557  0.557  0.314  1.0
  O  O26  1  0.943  0.557  0.814  1.0
  O  O27  1  0.443  0.443  0.686  1.0
  O  O28  1  0.513  0.862  0.363  1.0
  O  O29  1  0.013  0.138  0.137  1.0
  O  O30  1  0.487  0.138  0.637  1.0
  O  O31  1  0.987  0.862  0.863  1.0
  O  O32  1  0.026  0.110  0.618  1.0
  O  O33  1  0.526  0.890  0.882  1.0
  O  O34  1  0.974  0.890  0.382  1.0
  O  O35  1  0.474  0.110  0.118  1.0
  O  O36  1  0.130  0.626  0.514  1.0
  O  O37  1  0.630  0.374  0.986  1.0
  O  O38  1  0.870  0.374  0.486  1.0
  O  O39  1  0.370  0.626  0.014  1.0
  O  O40  1  0.065  0.147  0.441  1.0
  O  O41  1  0.565  0.853  0.059  1.0
  O  O42  1  0.935  0.853  0.559  1.0
  O  O43  1  0.435  0.147  0.941  1.0
  O  O44  1  0.176  0.158  0.756  1.0
  O  O45  1  0.676  0.842  0.744  1.0
  O  O46  1  0.824  0.842  0.244  1.0
  O  O47  1  0.324  0.158  0.256  1.0
  O  O48  1  0.913  0.157  0.889  1.0
  O  O49  1  0.413  0.843  0.611  1.0
  O  O50  1  0.087  0.843  0.111  1.0
  O  O51  1  0.587  0.157  0.389  1.0
[/CIF]
.
The compound described by Er(IO3)3 crystallizes in the monoclinic P2_1/c space group. Er(1) is bonded in a 8-coordinate geometry to one O(1), one O(2), one O(3), one O(4), one O(5), one O(8), and two equivalent O(6) atoms. There are nine inequivalent O sites. In the first O site, O(5) is bonded in a bent 120 degrees geometry to one Er(1) and one I(3) atom. In the second O site, O(6) is bonded in a distorted bent 150 degrees geometry to two equivalent Er(1) and one I(3) atom. In the third O site, O(7) is bonded in a distorted single-bond geometry to one I(1) and two equivalent I(3) atoms. In the fourth O site, O(8) is bonded in a bent 120 degrees geometry to one Er(1) and one I(2) atom. In the fifth O site, O(1) is bonded in a distorted bent 150 degrees geometry to one Er(1) and one I(1) atom. In the sixth O site, O(9) is bonded in a distorted single-bond geometry to one I(2) atom. In the seventh O site, O(2) is bonded in a bent 150 degrees geometry to one Er(1) and one I(1) atom. In the eighth O site, O(3) is bonded in a bent 120 degrees geometry to one Er(1) and one I(1) atom. In the ninth O site, O(4) is bonded in a bent 120 degrees geometry to one Er(1) and one I(2) atom. There are three inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(7) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(4), one O(8), and one O(9) atom. In the third I site, I(3) is bonded in a 3-coordinate geometry to one O(5), one O(6), and two equivalent O(7) atoms. is represented by the CIF card [CIF]
data_Er(IO3)3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.999
_cell_length_b   8.643
_cell_length_c   16.342
_cell_angle_alpha   65.375
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   770.287
_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
  Er  Er0  1  0.287  0.353  0.105  1.0
  Er  Er1  1  0.787  0.647  0.395  1.0
  Er  Er2  1  0.713  0.647  0.895  1.0
  Er  Er3  1  0.213  0.353  0.605  1.0
  I  I4  1  0.812  0.577  0.143  1.0
  I  I5  1  0.312  0.423  0.357  1.0
  I  I6  1  0.188  0.423  0.857  1.0
  I  I7  1  0.688  0.577  0.643  1.0
  I  I8  1  0.599  0.082  0.300  1.0
  I  I9  1  0.099  0.918  0.200  1.0
  I  I10  1  0.401  0.918  0.700  1.0
  I  I11  1  0.901  0.082  0.800  1.0
  I  I12  1  0.652  0.144  0.021  1.0
  I  I13  1  0.152  0.856  0.479  1.0
  I  I14  1  0.348  0.856  0.979  1.0
  I  I15  1  0.848  0.144  0.521  1.0
  O  O16  1  0.605  0.406  0.170  1.0
  O  O17  1  0.105  0.594  0.330  1.0
  O  O18  1  0.395  0.594  0.830  1.0
  O  O19  1  0.895  0.406  0.670  1.0
  O  O20  1  0.869  0.622  0.027  1.0
  O  O21  1  0.369  0.378  0.473  1.0
  O  O22  1  0.131  0.378  0.973  1.0
  O  O23  1  0.631  0.622  0.527  1.0
  O  O24  1  0.057  0.443  0.186  1.0
  O  O25  1  0.557  0.557  0.314  1.0
  O  O26  1  0.943  0.557  0.814  1.0
  O  O27  1  0.443  0.443  0.686  1.0
  O  O28  1  0.513  0.862  0.363  1.0
  O  O29  1  0.013  0.138  0.137  1.0
  O  O30  1  0.487  0.138  0.637  1.0
  O  O31  1  0.987  0.862  0.863  1.0
  O  O32  1  0.026  0.110  0.618  1.0
  O  O33  1  0.526  0.890  0.882  1.0
  O  O34  1  0.974  0.890  0.382  1.0
  O  O35  1  0.474  0.110  0.118  1.0
  O  O36  1  0.130  0.626  0.514  1.0
  O  O37  1  0.630  0.374  0.986  1.0
  O  O38  1  0.870  0.374  0.486  1.0
  O  O39  1  0.370  0.626  0.014  1.0
  O  O40  1  0.065  0.147  0.441  1.0
  O  O41  1  0.565  0.853  0.059  1.0
  O  O42  1  0.935  0.853  0.559  1.0
  O  O43  1  0.435  0.147  0.941  1.0
  O  O44  1  0.176  0.158  0.756  1.0
  O  O45  1  0.676  0.842  0.744  1.0
  O  O46  1  0.824  0.842  0.244  1.0
  O  O47  1  0.324  0.158  0.256  1.0
  O  O48  1  0.913  0.157  0.889  1.0
  O  O49  1  0.413  0.843  0.611  1.0
  O  O50  1  0.087  0.843  0.111  1.0
  O  O51  1  0.587  0.157  0.389  1.0
[/CIF]
.