Spectroelectrochemical Properties and Catalytic Activity in Cyclohexane Oxidation of the Hybrid Zr/Hf-Phthalocyaninate-Capped Nickel(II) and Iron(II) tris-Pyridineoximates and Their Precursors
| Autor: | Maria-Andreea Lungan, Svetlana A. Belova, Dumitru Samohvalov, Denisa Darvasiová, Armando J. L. Pombeiro, Vladimir B. Arion, Semyon V. Dudkin, Yan Z. Voloshin, Corina-Mihaela Manta, Peter Rapta, Samuel M. Meier-Menches, Michal Malček, Luísa M. D. R. S. Martins, Daniel Gherca |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Models
Molecular Indoles Clathrochelate Pyridines Pharmaceutical Science Isoindoles phthalocyanines DFT calculations 01 natural sciences zirconium(IV) Analytical Chemistry law.invention chemistry.chemical_compound clathrochelates law Coordination Complexes Nickel Drug Discovery Oximes Electron paramagnetic resonance Density Functional Theory iron(II) homogeneous catalysis 3. Good health Chemistry (miscellaneous) Molecular Medicine Oxidation-Reduction nickel(II) Cyclohexane Iron chemistry.chemical_element hafnium(IV) 010402 general chemistry Redox Catalysis Article lcsh:QD241-441 Transition metal lcsh:Organic chemistry Cyclohexanes Polymer chemistry Physical and Theoretical Chemistry Zirconium oxidation reactions 010405 organic chemistry Organic Chemistry Electron Spin Resonance Spectroscopy spectroelectrochemistry 0104 chemical sciences chemistry Hafnium |
| Zdroj: | Molecules, Vol 26, Iss 336, p 336 (2021) Molecules Volume 26 Issue 2 |
| ISSN: | 1420-3049 |
| Popis: | The in situ spectroelectrochemical cyclic voltammetric studies of the antimony-monocapped nickel(II) and iron(II) tris-pyridineoximates with a labile triethylantimony cross-linking group and Zr(IV)/Hf(IV) phthalocyaninate complexes were performed in order to understand the nature of the redox events in the molecules of heterodinuclear zirconium(IV) and hafnium(IV) phthalocyaninate-capped derivatives. Electronic structures of their 1e-oxidized and 1e-electron-reduced forms were experimentally studied by electron paramagnetic resonance (EPR) spectroscopy and UV&minus vis&minus near-IR spectroelectrochemical experiments and supported by density functional theory (DFT) calculations. The investigated hybrid molecular systems that combine a transition metal (pseudo)clathrochelate and a Zr/Hf-phthalocyaninate moiety exhibit quite rich redox activity both in the cathodic and in the anodic region. These binuclear compounds and their precursors were tested as potential catalysts in oxidation reactions of cyclohexane and the results are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|