Structure and certain physicochemical properties of azines

1. On the basis of the data of the method of dipole moments, potentiometric titration, and vibrational spectroscopy, a flat s-trans-configuration of the azines of certain aromatic aldehydes was proposed. 2. The values of pKa of symmetrical and nonsymmetrical benzalazines are determined by the interaction of the proton not only with one of the nitrogen atoms, but also with the entire conjugated azine fragment. .