Bazı amidoksimlerin protonasyon sabitlerinin potansiyometrik yöntemle tayini
Determination of protonation constants of some amidoximes by potentiometric method
- Tez No: 84303
- Danışmanlar: YRD. DOÇ. DR. NEDİME DÜRÜST
- Tez Türü: Yüksek Lisans
- Konular: Kimya, Chemistry
- Anahtar Kelimeler: Potansiyometrik titrasyon, susuz ortam, amidoksim, protonasyon sabiti
- Yıl: 1999
- Dil: Türkçe
- Üniversite: Kocaeli Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Kimya Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 81
Özet
BAZI AMIDOKSIMLERIN PROTONASYON SABİTLERİNİN POTANSİYOMETRİK YÖNTEMLE TAYİNİ İlknur MERİÇ
Özet (Çeviri)
DETERMINATION of PROTONATION CONSTANTS of SOME AMIDOXIMES BY POTENTIOMETRIC METHOD İLKNUR MERİÇ Key words : Potentiometric titration, non-aqueous media, amidoximes, protonation constants ABSTRACT : In this study, the protonation constants of some amidoximes were determined by potentiometric titration in non-aqueous media. The protonation constant values were discussed in terms of solvent effect and structural characteristics exerted by the groups on amino nitrogen. Amidoximes have found numerous technological applications like corrosion inhibition, stabilizing polymers, paper strengtheninig. Another important application of amidoximes is uranium recovery from the sea water. Complex formation capability of amidoximes makes use of the determination of some metals. Amidoximes especialy carrying arylsulfonyl and pyridyl groups were reported to have shown significant biological activities. The compounds were titrated by perchloric acid in acetic acid and the milivolts values were plotted against the volume of titrant to obtain half neutralization potential. pKa values were estimated from the half-neutralisation potentials (HNP). These results were interpreted according to the effect of substituents present on aminonitrogen and found in accord with the theoretical predictions.
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