Mechanism of Selective Hydrogenation (IMAGE) University of Tokyo Caption This depicts the mechanism of selective hydrogenation of the carbon-oxygen bond by concerted action of the ligand and the metal. Credit © 2015 Kyoko Nozaki Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.