Reduction and Oxidation of Hydroxyquinolines in Acetonitrile and Dimethylsulfoxide

0444481 - ÚFCH JH 2016 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Sokolová, Romana - Ramešová, Šárka - Fiedler, Jan - Kolivoška, Viliam - Degano, I. - Gál, M. - Szala, M. - Nycz, J. E.
Reduction and Oxidation of Hydroxyquinolines in Acetonitrile and Dimethylsulfoxide.
XXXV. Moderní elektrochemické metody. Sborník přednášek mezinárodní odborné konference. Ústí nad Labem: Srsenová Lenka - Best Servis, 2015 - (Navrátil, T.; Fojta, M.; Schwarzová, K.), s. 204-208. ISBN 978-80-905221-3-8.
[Moderní elektrochemické metody /35./. Jetřichovice (CZ), 18.05.2015-22.05.2015]
Grant ostatní: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR M200401201
Program: M
Institucionální podpora: RVO:61388955
Klíčová slova: quinolines * hydroxyquiolines * reduction
Kód oboru RIV: CG - Elektrochemie

This study is focused on investigation of oxidation and reduction pathways of selected hydroxyquinoline compounds in nonaqueous solutions. The experimentally obtained reduction potentials are reported to well correlate with calculated values of LUMO energies as well as the obtained oxidation potentials are in a good agreement with theoretical HOMO energies. The cyclic voltammetry, in situ UV/Vis spectroelectrochemistry and in situ IR spectroelectrochemistry confirmed that the oxidation mechanism is complicated. Oxidation unexpectedly proceeds together with protonation of the starting compound. This behaviour was found for all studied compounds, hydroxyquinoline carboxylic acids and also for compounds, where a methyl group is present instead of carboxylic group.
Trvalý link: http://hdl.handle.net/11104/0246985