Abstract

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. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.