Hydrogen Evolution Reactions Catalyzed by a Bis(thiosemicarbazone) Cobalt Complex: An Experimental and Theoretical Study
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STRĂISTARI, Tatiana, HARDRE, Renaud Y., FIZE, Jennifer, SHOVA, Sergiu, GIORGI, Michel, REGLIER, Marius, ARTERO, Vincent, ORIO, Maylis. Hydrogen Evolution Reactions Catalyzed by a Bis(thiosemicarbazone) Cobalt Complex: An Experimental and Theoretical Study. In: Chemistry - A European Journal, 2018, vol. 24, pp. 8779-8786. ISSN 0947-6539. DOI: https://doi.org/10.1002/chem.201801155
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Chemistry - A European Journal
Volumul 24 / 2018 / ISSN 0947-6539

Hydrogen Evolution Reactions Catalyzed by a Bis(thiosemicarbazone) Cobalt Complex: An Experimental and Theoretical Study

DOI: https://doi.org/10.1002/chem.201801155

Pag. 8779-8786

Străistari Tatiana123, Hardre Renaud Y.1, Fize Jennifer3, Shova Sergiu4, Giorgi Michel1, Reglier Marius1, Artero Vincent3, Orio Maylis1
 
1 Universitatea Provence, Marseille (Aix-Marseille Université),
2 Institute of Chemistry of the Academy of Sciences of Moldova,
3 Grenoble Alpes University,
4 “Petru Poni” Institute of Macromolecular Chemistry
 
Disponibil în IBN: 9 august 2018


Rezumat

The synthesis and characterization of a dinuclear bis(thiosemicarbazone) cobalt complex [Co2L2(NCS)2] is reported. This complex exhibits significant catalytic activity for hydrogen production in DMF by using triethylammonium (Et3NHBF4) as the proton source. Cyclic voltammetry data allowed a maximum turnover frequency of 130 s−1 for 1 m proton concentration to be determined. The catalytic nature of the process and the production of dihydrogen were confirmed by gas analysis during controlled potential electrolysis experiments. Quantum chemical calculations show that the complex displays a ligand-assisted metal-centered reactivity and supports a catalytic mechanism involving ligand-based reduction and protonation steps followed by metal-centered processes.

Cuvinte-cheie
cobalt, Hydrogen evolution reaction, Quantum chemistry