Hydrogen Activation and Metal Hydride Formation Trigger Cluster Formation from Supported Iridium Complexes
journal contributionposted on 21.03.2012, 00:00 by Jing Lu, Ceren Aydin, Nigel D. Browning, Bruce C. Gates
The formation of iridium clusters from supported mononuclear iridium complexes in H2 at 300 K and 1 bar was investigated by spectroscopy and atomic-resolution scanning transmission electron microscopy. The first steps of cluster formation from zeolite-supported Ir(C2H4)2 complexes are triggered by the activation of H2 and the formation of iridium hydride, accompanied by the breaking of iridium–support bonds. This reactivity can be controlled by the choice of ligands on the iridium, which include the support.