Coordination chemistry of silver(I), gold(I) and nickel(II) with bis N-heterocyclic carbenes: applications in electrocatalytic hydrogen evolution reaction. Issue 11 (28th October 2022)

• Record Type: Journal Article
• Authors: Geetha, B. M.; Yhobu, Zhoveta; Monica, V.; Małecki, Jan Grzegorz; Nagaraju, D. H.; Azam, Mohammad; Al-Resayes, Saud I.; Budagumpi, Srinivasa
• Is Part Of: Journal of coordination chemistry. Volume 75:Issue 11/14(2022)
• Page Start: 1744
• Page End: 1759
• Publication Date: 2022-10-28
• Subjects: Binuclear complex -- hydrogen evolution reaction -- N-heterocyclic carbene -- Tafel slope -- X-ray diffraction; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2022.2107428
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: The design and systematic investigation of an electrocatalyst is crucial in ensuring proper benchmarking of the catalyst developed. This perspective has led to molecular catalysts developed from N -heterocyclic carbene (NHC) metal complexes for electrocatalytic applications. Among the array of electrocatalytic applications available, hydrogen evolution reaction (HER) is at the forefront due to the ever-increasing demand for cleaner and sustainable energy. This work is focussed on the development of binuclear metal-NHC complexes from bis-{4-(2, 6-diethylphenyl)-1, 2, 4-triazole} with a propyl spacer and hexafluorophosphate counterion. The NHC precursor and binuclear silver complexes prepared have been elucidated by single-crystal X-ray diffraction. An assessment of the binuclear complex bearing the same ligand with nickel(II) resulted in the formation of a counter held nickel derivative. The electrocatalytic performance of these metal organic derivatives in HER is evaluated along with their electrochemical impedance spectral discussion. Graphical Abstract: UF0001