Distinct Proton and Water Reduction Behavior with a Cobalt(III) Electrocatalyst Based on Pentadentate Oximes |
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| Authors: | Debashis Basu Dr Shivnath Mazumder Xuetao Shi Dr Richard J Staples Prof H Bernhard Schlegel Prof Cláudio N Verani |
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| Institution: | 1. Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit, MI 48202 (USA) http://chem.wayne.edu/veranigroup/;2. Department of Chemistry, Michigan State University, Lansing, MI 48824 (USA) |
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| Abstract: | A new pentadentate oxime has been designed to drive the preferential coordination favored by CoI in catalysts used for proton/water reduction. The ligand incorporates water upon metal coordination and is water soluble. This CoIII species is doubly reduced to CoI and exhibits H+ reduction activity in the presence of weak acids in MeCN and evolves H2 upon protonation suggesting that the ligand design increases catalyst effectiveness. Superior catalysis is observed in water with a turnover number (TON) of 5700 over 18 h. However, the catalyst yields Co‐based nanoparticles, indicating that the solvent media may dictate the nature of the catalyst. |
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| Keywords: | cobalt complexes nanoparticles oxime ligands water reduction |
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