Electrocatalytic and photocatalytic hydrogen production in aqueous solution by a molecular cobalt complex

A mononuclear cobalt complex supported by a new type of pentadentate ligand catalyzed the evolution of hydrogen in purely aqueous solution (see picture). This cobalt complex could serve as both electrocatalyst and photocatalyst for efficient evolution of hydrogen. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim