Issue 24, 2013

Electrogenerated polypyridyl ruthenium hydride and ligand activation for water reduction to hydrogen and acetone to iso-propanol

Abstract

The complex [Ru(tpy)(bpy)(S)]2+ (tpy = 2,2′:6′,2′′-terpyridine, bpy = 2,2′-bipyridine, S = solvent) is an electrocatalyst for water or proton reduction to hydrogen and for reduction of acetone to iso-propanol in CH3CN. Electrocatalysis is initiated by sequential 1e reductions at the tpy and bpy ligands followed by addition of water to give a ruthenium hydride intermediate. Significant rate enhancements for hydrogen evolution are observed with added weak acids, such as H2PO4, for the latter, with a rate enhancement of 104 compared to water. The reactivity of the in situ electrogenerated hydride toward hydride transfer is promoted by ligand reduction.

Graphical abstract: Electrogenerated polypyridyl ruthenium hydride and ligand activation for water reduction to hydrogen and acetone to iso-propanol

Supplementary files

Article information

Article type
Communication
Submitted
08 Apr 2013
Accepted
08 May 2013
First published
09 May 2013

Phys. Chem. Chem. Phys., 2013,15, 9503-9507

Electrogenerated polypyridyl ruthenium hydride and ligand activation for water reduction to hydrogen and acetone to iso-propanol

Z. Chen, C. R. K. Glasson, P. L. Holland and T. J. Meyer, Phys. Chem. Chem. Phys., 2013, 15, 9503 DOI: 10.1039/C3CP51946E

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