title: Hydrogen activation and metal hydride formation trigger cluster formation from supported iridium complexes.
abstract: The formation of iridium clusters from supported mononuclear iridium complexes in H(2) 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(C(2)H(4))(2) complexes are triggered by the activation of H(2) 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.
authors.affiliation: Department of Chemical Engineering and Materials Science, University of California, One Shields Avenue, Davis, California 95616, United States.
authors.forename: Jing
authors.initials: J
authors.lastname: Lu
authors.forename: Ceren
authors.initials: C
authors.lastname: Aydin
authors.forename: Nigel D
authors.initials: ND
authors.lastname: Browning
authors.forename: Bruce C
authors.initials: BC
authors.lastname: Gates