POTENTIOMETRIC INVESTIGATIONS OF INTRAMOLECULAR 9-MEMBERED AND 10-MEMBERED RING HYDROGEN-BONDS OBSERVED IN SCHIFF-BASES


GUNDUZ T., GUNDUZ N., KILIC E., ATAKOL O., KOSEOGLU F.

ANALYTICA CHIMICA ACTA, vol.249, no.2, pp.427-431, 1991 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 249 Issue: 2
  • Publication Date: 1991
  • Doi Number: 10.1016/s0003-2670(00)83016-0
  • Title of Journal : ANALYTICA CHIMICA ACTA
  • Page Numbers: pp.427-431

Abstract

Schiff bases were titrated potentiometrically with perchloric acid in nitrobenzene and their half-neutralization potentials were determined. These potentials indicated that nine- or ten-membered ring intramolecular hydrogen bonds of the O-H ... O type were formed in these compounds. This observation was explained in terms of the flatness of these compounds, brought about by the resonances of the three double bonds and the lone pairs of electrons present.