Abstract
The mutual influence of the orientational relaxation of polyatomic anions of different types of symmetry in aqueous solutions and the rupture of H bonds is examined. It is demonstrated that the experimentally measured correlation times of the dipole moment and Raman polarizability tensor of linear anions can be interpreted as the time of the interaction of the anion with water molecules. The reorientation of perchlorate ion in water is accompanied by the rupture of the ion-molecular bond, being associated with the reorientation of the hydration shell. The reorientation of sulfite, nitrate, and carbonate ions does not result in the rupture of the ion-molecular bond, and hence, the orientational relaxation of these anions can be considered as a lower limit of its lifetime.
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