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Proton transfer and self-association of sterically modified Schiff bases.
Autorzy
Rok wydania
2003
Czasopismo
Numer woluminu
287
Strony
113-124
DOI
10.1016/S0301-0104(02)00983-7
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The intramolecular proton transfer process has been studied by measuring of the dipole moment, an average molecular weight, and UV/VIS spectra as a function of temperature and concentration in a few solvents of low polarity. Ten Schiff bases were selected for such studies, where steric repulsion of alkyl- and aryl-substituents in azomethine moiety enhances the strength of hydrogen bond and the proton transfer process. The self-association of species with intramolecular proton transfer has been investigated as a function of solvent polarity. Behaviour of these systems has been compared with those of Mannich bases, where intramolecular electron coupling between acid and base centres is considerably prevented by –CH2– bridge. A substantially different behaviour of these two types of compounds has been found out.
Adres publiczny
https://doi.org/10.1016/S0301-0104(02)00983-7
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