Low Potential CO 2 Reduction by Inert Fe(II)-Macrobicyclic Complex: A New Concept of Cavity Assisted CO 2 Activation.

Autor: Sarkar P; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India.; Institute of Health Sciences, Presidency University, Second Campus, Plot No. DG/02/02, Premises No. 14-0358, Action Area-ID, New Town, Kolkata, West Bengal, 700156, India., Sarkar S; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India., Nayek A; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India., Adarsh NN; Chemistry and Biomolecular Science, Clarkson University, 8 Clarkson Ave., Potsdam, NY, 13699, USA., Pal AK; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India., Datta A; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India., Dey A; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India., Ghosh P; School of Chemical Sciences, Indian Association for the Cultivation of Science (IACS), Kolkata, 700032, India.
Jazyk: angličtina
Zdroj: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 Mar; Vol. 20 (10), pp. e2304794. Date of Electronic Publication: 2023 Oct 27.
DOI: 10.1002/smll.202304794
Abstrakt: The advantage of a pre-organized π-cavity of Fe(II) complex of a newly developed macrobicycle cryptand is explored for CO 2 reduction by overcoming the problem of high overpotential associated with the inert nature of the cryptate. Thus, a bipyridine-centered tritopic macrobicycle having a molecular π-cavity capable of forming Fe(II) complex as well as potential for CO 2 encapsulation is synthesized. The inert Fe(II)-cryptate shows much lower potential in cyclic voltammetry than the Fe(II)-tris-dimethylbipyridine (Fe-MBP) core. Interestingly, this cryptate shows electrochemical CO 2 reduction at a considerably lower potential than the Fe-MBP inert core. Therefore, this study represents that a well-structured π-cavity may generate a new series of molecular catalysts for the CO 2 reduction reaction (CO 2 RR), even with the inert metal complexes.
(© 2023 Wiley-VCH GmbH.)
Databáze: MEDLINE
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