Potentiometric investigations of intramolecular nine- and ten-membered ring hydrogen bonds observed in Schiff bases

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

Analytica Chimica Acta, cilt.249, sa.2, ss.427-431, 1991 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 249 Sayı: 2
  • Basım Tarihi: 1991
  • Doi Numarası: 10.1016/s0003-2670(00)83016-0
  • Dergi Adı: Analytica Chimica Acta
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.427-431
  • Anahtar Kelimeler: POTENTIOMETRY, TITRIMETRY, HYDROGEN BONDING, SCHIFF BASES, NON-AQUEOUS MEDIA, TITRATIONS, BASICITY
  • Ankara Üniversitesi Adresli: Evet

Özet

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 OH···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. © 1991.