The material described by Sr(IO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing SrO7 pentagonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Sr(1) and one I(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(4), one O(5), and one O(6) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr(IO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.981
_cell_length_b   6.038
_cell_length_c   17.800
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   642.732
_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
  Sr  Sr0  1  0.708  0.190  0.097  1.0
  Sr  Sr1  1  0.208  0.310  0.903  1.0
  Sr  Sr2  1  0.292  0.690  0.403  1.0
  Sr  Sr3  1  0.792  0.810  0.597  1.0
  I  I4  1  0.947  0.152  0.423  1.0
  I  I5  1  0.248  0.226  0.215  1.0
  I  I6  1  0.748  0.274  0.785  1.0
  I  I7  1  0.447  0.348  0.577  1.0
  I  I8  1  0.053  0.652  0.077  1.0
  I  I9  1  0.752  0.726  0.285  1.0
  I  I10  1  0.252  0.774  0.715  1.0
  I  I11  1  0.553  0.848  0.923  1.0
  O  O12  1  0.116  0.048  0.345  1.0
  O  O13  1  0.035  0.046  0.175  1.0
  O  O14  1  0.482  0.036  0.213  1.0
  O  O15  1  0.478  0.077  0.985  1.0
  O  O16  1  0.831  0.128  0.871  1.0
  O  O17  1  0.646  0.154  0.537  1.0
  O  O18  1  0.146  0.346  0.463  1.0
  O  O19  1  0.331  0.372  0.129  1.0
  O  O20  1  0.978  0.423  0.015  1.0
  O  O21  1  0.982  0.464  0.787  1.0
  O  O22  1  0.535  0.454  0.825  1.0
  O  O23  1  0.616  0.452  0.655  1.0
  O  O24  1  0.884  0.548  0.155  1.0
  O  O25  1  0.965  0.546  0.325  1.0
  O  O26  1  0.518  0.536  0.287  1.0
  O  O27  1  0.522  0.577  0.515  1.0
  O  O28  1  0.169  0.628  0.629  1.0
  O  O29  1  0.354  0.654  0.963  1.0
  O  O30  1  0.854  0.846  0.037  1.0
  O  O31  1  0.669  0.872  0.371  1.0
  O  O32  1  0.022  0.923  0.485  1.0
  O  O33  1  0.018  0.964  0.713  1.0
  O  O34  1  0.465  0.954  0.675  1.0
  O  O35  1  0.384  0.952  0.845  1.0
[/CIF]
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The material described by Sr(IO3)2 crystallizes in the orthorhombic P2_12_12_1 space group. Sr(1) is bonded to one O(1), one O(2), one O(3), one O(5), one O(6), and two equivalent O(4) atoms to form distorted corner-sharing SrO7 pentagonal bipyramids. There are six inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the second O site, O(2) is bonded in a bent 120 degrees geometry to one Sr(1) and one I(2) atom. In the third O site, O(3) is bonded in a distorted water-like geometry to one Sr(1) and one I(2) atom. In the fourth O site, O(4) is bonded in a distorted trigonal planar geometry to two equivalent Sr(1) and one I(1) atom. In the fifth O site, O(5) is bonded in a 3-coordinate geometry to one Sr(1), one I(1), and one I(2) atom. In the sixth O site, O(6) is bonded in a distorted bent 120 degrees geometry to one Sr(1) and one I(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 3-coordinate geometry to one O(1), one O(4), one O(5), and one O(6) atom. In the second I site, I(2) is bonded in a 3-coordinate geometry to one O(1), one O(2), one O(3), and one O(5) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr(IO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.981
_cell_length_b   6.038
_cell_length_c   17.800
_cell_angle_alpha   90.000
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   642.732
_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
  Sr  Sr0  1  0.708  0.190  0.097  1.0
  Sr  Sr1  1  0.208  0.310  0.903  1.0
  Sr  Sr2  1  0.292  0.690  0.403  1.0
  Sr  Sr3  1  0.792  0.810  0.597  1.0
  I  I4  1  0.947  0.152  0.423  1.0
  I  I5  1  0.248  0.226  0.215  1.0
  I  I6  1  0.748  0.274  0.785  1.0
  I  I7  1  0.447  0.348  0.577  1.0
  I  I8  1  0.053  0.652  0.077  1.0
  I  I9  1  0.752  0.726  0.285  1.0
  I  I10  1  0.252  0.774  0.715  1.0
  I  I11  1  0.553  0.848  0.923  1.0
  O  O12  1  0.116  0.048  0.345  1.0
  O  O13  1  0.035  0.046  0.175  1.0
  O  O14  1  0.482  0.036  0.213  1.0
  O  O15  1  0.478  0.077  0.985  1.0
  O  O16  1  0.831  0.128  0.871  1.0
  O  O17  1  0.646  0.154  0.537  1.0
  O  O18  1  0.146  0.346  0.463  1.0
  O  O19  1  0.331  0.372  0.129  1.0
  O  O20  1  0.978  0.423  0.015  1.0
  O  O21  1  0.982  0.464  0.787  1.0
  O  O22  1  0.535  0.454  0.825  1.0
  O  O23  1  0.616  0.452  0.655  1.0
  O  O24  1  0.884  0.548  0.155  1.0
  O  O25  1  0.965  0.546  0.325  1.0
  O  O26  1  0.518  0.536  0.287  1.0
  O  O27  1  0.522  0.577  0.515  1.0
  O  O28  1  0.169  0.628  0.629  1.0
  O  O29  1  0.354  0.654  0.963  1.0
  O  O30  1  0.854  0.846  0.037  1.0
  O  O31  1  0.669  0.872  0.371  1.0
  O  O32  1  0.022  0.923  0.485  1.0
  O  O33  1  0.018  0.964  0.713  1.0
  O  O34  1  0.465  0.954  0.675  1.0
  O  O35  1  0.384  0.952  0.845  1.0
[/CIF]
.