Electrocatalytic H2 evolution promoted by a bioinspired (N2S2)Ni(ii) complex. Issue 8 (4th January 2022)

• Record Type: Journal Article
• Authors: Sinha, Soumalya; Tran, Giang N.; Na, Hanah; Mirica, Liviu M.
• Is Part Of: Chemical communications. Volume 58:Issue 8(2022)
• Page Start: 1143
• Page End: 1146
• Publication Date: 2022-01-04
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/d1cc05139c
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : We report a bioinspired (N2S2)Ni(ii ) complex that catalyzes the electrochemical H2 evolution reaction (HER) with a turnover frequency (TOF) of ∼1250 s −1 at low acid concentration in acetonitrile. Abstract : A bioinspired (N2S2)Ni(ii ) electrocatalyst is reported that produces H2 from CF3 CO2 H with a turnover frequency (TOF) of ∼1250 s −1 at low acid concentration (<0.043 M) in MeCN. A mechanism for the H2 production by this electrocatalyst is proposed and its activity is benchmarked against those of other reported molecular Ni H2 evolution electrocatalysts. The involvement of a hemilabile pyridyl group of the N2S2 ligand is proposed to mimic the role of a cysteine residue involved in the biological proton reduction performed by [NiFe] hydrogenases.