The material described by Sr(OI)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 4-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent I(2), and three equivalent I(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one O(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one O(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to three equivalent Sr(1) and one I(2) atom. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one I(1), and one I(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr(IO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.793
_cell_length_b   4.628
_cell_length_c   11.689
_cell_angle_alpha   84.150
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.647
_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  0.678  0.890  0.860  1.0
  Sr  Sr1  1  0.178  0.110  0.640  1.0
  Sr  Sr2  1  0.322  0.110  0.140  1.0
  Sr  Sr3  1  0.822  0.890  0.360  1.0
  I  I4  1  0.563  0.684  0.132  1.0
  I  I5  1  0.063  0.316  0.368  1.0
  I  I6  1  0.437  0.316  0.868  1.0
  I  I7  1  0.937  0.684  0.632  1.0
  I  I8  1  0.987  0.895  0.888  1.0
  I  I9  1  0.487  0.105  0.612  1.0
  I  I10  1  0.013  0.105  0.112  1.0
  I  I11  1  0.513  0.895  0.388  1.0
  O  O12  1  0.747  0.378  0.906  1.0
  O  O13  1  0.247  0.622  0.594  1.0
  O  O14  1  0.253  0.622  0.094  1.0
  O  O15  1  0.753  0.378  0.406  1.0
  O  O16  1  0.725  0.410  0.790  1.0
  O  O17  1  0.225  0.590  0.710  1.0
  O  O18  1  0.275  0.590  0.210  1.0
  O  O19  1  0.775  0.410  0.290  1.0
[/CIF]
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The material described by Sr(OI)2 crystallizes in the monoclinic P2_1/c space group. Sr(1) is bonded in a 4-coordinate geometry to two equivalent O(1), two equivalent O(2), two equivalent I(2), and three equivalent I(1) atoms. There are two inequivalent O sites. In the first O site, O(1) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one O(2) atom. In the second O site, O(2) is bonded in a 3-coordinate geometry to two equivalent Sr(1) and one O(1) atom. There are two inequivalent I sites. In the first I site, I(1) is bonded in a 4-coordinate geometry to three equivalent Sr(1) and one I(2) atom. In the second I site, I(2) is bonded in a distorted rectangular see-saw-like geometry to two equivalent Sr(1), one I(1), and one I(2) atom. is represented by the Crystallographic Information File (CIF) [CIF]
data_Sr(IO)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   11.793
_cell_length_b   4.628
_cell_length_c   11.689
_cell_angle_alpha   84.150
_cell_angle_beta   90.000
_cell_angle_gamma   90.000
_symmetry_Int_Tables_number   1
_cell_volume   634.647
_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  0.678  0.890  0.860  1.0
  Sr  Sr1  1  0.178  0.110  0.640  1.0
  Sr  Sr2  1  0.322  0.110  0.140  1.0
  Sr  Sr3  1  0.822  0.890  0.360  1.0
  I  I4  1  0.563  0.684  0.132  1.0
  I  I5  1  0.063  0.316  0.368  1.0
  I  I6  1  0.437  0.316  0.868  1.0
  I  I7  1  0.937  0.684  0.632  1.0
  I  I8  1  0.987  0.895  0.888  1.0
  I  I9  1  0.487  0.105  0.612  1.0
  I  I10  1  0.013  0.105  0.112  1.0
  I  I11  1  0.513  0.895  0.388  1.0
  O  O12  1  0.747  0.378  0.906  1.0
  O  O13  1  0.247  0.622  0.594  1.0
  O  O14  1  0.253  0.622  0.094  1.0
  O  O15  1  0.753  0.378  0.406  1.0
  O  O16  1  0.725  0.410  0.790  1.0
  O  O17  1  0.225  0.590  0.710  1.0
  O  O18  1  0.275  0.590  0.210  1.0
  O  O19  1  0.775  0.410  0.290  1.0
[/CIF]
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