Chromone-based Schiff base metal complexes as catalysts for catechol oxidation: Synthesis, kinetics and electrochemical studies

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dc.authoridBeyazit, Neslihan/0000-0002-5722-2400
dc.authoridDEMETGUL, CAHIT/0000-0003-1559-7279
dc.contributor.authorBeyazit, Neslihan
dc.contributor.authorCakmak, Didem
dc.contributor.authorDemetgul, Cahit
dc.date.accessioned2024-09-18T20:56:52Z
dc.date.available2024-09-18T20:56:52Z
dc.date.issued2017
dc.departmentHatay Mustafa Kemal Üniversitesien_US
dc.description.abstractTwo new Schiff base ligands with chromone moiety and their transition metal complexes were synthesized and characterized by elemental analyses, magnetic susceptibility, molar conductance and TGA analyses, FT IR, UV-Vis, NMR and mass spectroscopy. All the complexes synthesized have been investigated as functional models for catechol oxidase (catecholase) activity by employing 3,5-di-tert-butylcatechol as a model substrate. The two mononuclear copper(II) and two mononuclear iron(II) complexes show catecholase activity with turnover (k(cat)) numbers lying in the range 27.2-1328.4 h(-1). According to the kinetic measurement results, the rate of catechol oxidation follows first order kinetics and iron(II) complexes were found to have higher catalytic activity than those of copper(II) complexes. Electron donating substituent on Schiff base ligand enhanced the catalytic activity of metal complexes while the electron-withdrawing substituent led to a decrease in activity. The electrochemical properties of two Schiff bases and their metal complexes were also investigated by Cyclic Voltammetry (CV) using glassy carbon electrode (GCE) at various scan rates. Electrochemical processes of all the compounds were observed as irreversible. (C) 2017 Elsevier Ltd. All rights reserved.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey [113Z604]en_US
dc.description.sponsorshipThis research was supported by The Scientific and Technological Research Council of Turkey (Project No: 113Z604).en_US
dc.identifier.doi10.1016/j.tet.2017.03.081
dc.identifier.endpage2779en_US
dc.identifier.issn0040-4020
dc.identifier.issue19en_US
dc.identifier.scopus2-s2.0-85016421639en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage2774en_US
dc.identifier.urihttps://doi.org/10.1016/j.tet.2017.03.081
dc.identifier.urihttps://hdl.handle.net/20.500.12483/12135
dc.identifier.volume73en_US
dc.identifier.wosWOS:000400532000008en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherPergamon-Elsevier Science Ltden_US
dc.relation.ispartofTetrahedronen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectSchiff baseen_US
dc.subjectChromoneen_US
dc.subjectMetal complexesen_US
dc.subjectCatecholase activityen_US
dc.subjectMichaelis-Menten kineticsen_US
dc.subjectElectrochemistryen_US
dc.titleChromone-based Schiff base metal complexes as catalysts for catechol oxidation: Synthesis, kinetics and electrochemical studiesen_US
dc.typeArticleen_US

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