PROTONATION CONSTANTS OF SOME SUBSTITUTED SALICYLIDENEANILINES IN ETHANOL-WATER MIXTURES

Authors
KOSEOGLU F KILIC E CANEL E YILMAZ N
Citation
F. Koseoglu et al., PROTONATION CONSTANTS OF SOME SUBSTITUTED SALICYLIDENEANILINES IN ETHANOL-WATER MIXTURES, Analytica chimica acta, 293(1-2), 1994, pp. 87-94
Citations number
31
Categorie Soggetti
Chemistry Analytical
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
293
Issue
1-2
Year of publication
1994
Pages
87 - 94
Database
ISI
SICI code
0003-2670(1994)293:1-2<87:PCOSSS>2.0.ZU;2-X
Abstract
Protonation constants of some substituted salicylideneanilines have be en determined in ethanol-water mixtures at ionic strength of 0.1 M and at 25 degrees C. A potentiometric method was used and calculation was done by Martell's and Motekaitis' PKAS computer programme. The trend in the values of protonation constants of Schiff's bases were explaine d in terms of the nature of the substituent and the dielectric constan t of medium. The applicability of the Hammett equation to the effect o f substituents in Schiff's bases is discussed.