Top View of the New Catalyst (image) Emory Health Sciences Share Print E-Mail Caption The dirhodium (shown in blue) drives the reaction, while the shape of the scaffold around it controls which C-H bond the catalyst works on. Credit Graphic images by Kuangbiao Liao, Emory University. Usage Restrictions None Share Print E-Mail 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.