Abstract
Ionic association constants of pyridine N-oxide perchlorate and semiperchlorate have been determined conductometrically as well as limiting molar conductances of PyOH + and PyOHOPy + cations in acetonitrile. The acid dissociation constant of the protonated pyridine N-oxide and the cationic homoconjugation constant of pyridine N-oxide with conjugated cationic acid have been found from potentiometric measurements. On the bass of determined values of the equilibrium constants, a scheme of fundamental ionic equilibria in the acetonitrile solutions of the perchlorates has been suggested.
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