Pregled bibliografske jedinice broj: 1023348
Electrochemical oxidation of flavonoids: PM6 and DFT for elucidating electronic changes and modelling oxidation potential (part II)
Electrochemical oxidation of flavonoids: PM6 and DFT for elucidating electronic changes and modelling oxidation potential (part II) // Journal of molecular liquids, 295 (2019), 111730, 8 doi:10.1016/j.molliq.2019.111730 (međunarodna recenzija, članak, znanstveni)
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Naslov
Electrochemical oxidation of flavonoids: PM6 and DFT for elucidating electronic changes and modelling oxidation potential (part II)
Autori
Miličević, Ante ; Miletić, Goran I. ; Novak Jovanović, Ivana
Izvornik
Journal of molecular liquids (0167-7322) 295
(2019);
111730, 8
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
The first oxidation potential ; Polyphenols ; Electronic structure ; Spin population ; QSPR
Sažetak
This paper is a continuation of our studies on the dependence of the first electrochemical oxidation potential, Ep1, on the electronic structures of flavonoids. For this purpose, a set of 20 flavonoids and their cation and radical formswere optimized by semi-empirical PM6 and DFT in water methods. Using differences in net atomic charges ΔNACCat-Neut calculated using PM6 we determined active OH oxygens. DFT in some cases gave different results, which were also in opposition to the literature. The models for the estimation of Ep1 based on the sum of atomic orbital spin populations on carbon atoms in skeleton of radicals, ΣAOSPRad, calculated by PM6 method yielded much better statistics than those calculated using DFT (S.E. = 0.064 vs. 0.118).
Izvorni jezik
Engleski
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Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
