title: Vibrational spectroscopy of CO in gas-phase rhodium cluster-CO complexes.
abstract: Infrared spectra of isolated unsaturated rhodium cluster-CO complexes in the region of the CO stretching vibration, nu(CO), are measured using a molecular beam depletion technique. These spectra provide benchmarks for interpreting values of nu(CO) that are found when CO is used to probe Rh surfaces and supported Rh nanoparticles. Supported nanoparticles have shifts of nu(CO) of as much as +100 cm-1 compared to the free clusters measured here, indicative of significant charge transfer to the support.
authors.affiliation: FOM-Institute for Plasma Physics Rijnhuizen, Edisonbaan 14, 3439 MN Nieuwegein, The Netherlands.
authors.forename: André
authors.initials: A
authors.lastname: Fielicke
authors.forename: Gert
authors.initials: G
authors.lastname: von Helden
authors.forename: Gerard
authors.initials: G
authors.lastname: Meijer
authors.forename: Benoit
authors.initials: B
authors.lastname: Simard
authors.forename: Stéphane
authors.initials: S
authors.lastname: Dénommée
authors.forename: David M
authors.initials: DM
authors.lastname: Rayner