title: Structures and reactions of methanol molecules on cobalt cluster ions studied by infrared photodissociation spectroscopy.
abstract: Structures of methanol molecules chemisorbed on cobalt cluster ions, Co(n)(+) (n=2-6), were investigated by infrared photodissociation (IR-PD) spectroscopy in the wavenumber range of 3400-4000 cm(-1). All the IR-PD spectra measured exhibit an intense peak in the region of the OH stretching vibration. In the IR-PD spectra of Co(2)(+)(CH(3)OH)(2,3) and Co(3)(+)(CH(3)OH)(3), weak peaks were observed additionally in the vicinity of 3000 cm(-1), being assignable to the CH stretching vibration. The comparison of the experimental results with the calculated ones leads us to conclude that (1) molecularly chemisorbed species, Co(n)(+)(CH(3)OH)(m) (m=1-3), and dissociatively chemisorbed species, Co(n)(+)(CH(3)OH)(m-1)(CH(3))(OH), are dominant and (2) the methanol dehydrogenation proceeds via an intermediate, Co(n)(+)(CH(3))(OH).
authors.affiliation: East Tokyo Laboratory, Genesis Research Institute, Inc., 717-86 Futamata, Ichikawa, Chiba 272-0001, Japan.
authors.forename: Shinichi
authors.initials: S
authors.lastname: Hirabayashi
authors.forename: Ryuji
authors.initials: R
authors.lastname: Okawa
authors.forename: Masahiko
authors.initials: M
authors.lastname: Ichihashi
authors.forename: Yoshiyuki
authors.initials: Y
authors.lastname: Kawazoe
authors.forename: Tamotsu
authors.initials: T
authors.lastname: Kondow