title: Photoelectron-photofragment coincidence studies of NO(-)-X clusters (X = H2O, CD4).
abstract: The dissociative photodetachment of NO-(H2O)and NO-(CD4) anion clusters was studied at 775 nm (1.60 eV) using photoelectron-photofragment coincidence spectroscopy. The correlation between the photoelectron and photodetached neutral spectra indicates vibrational excitation in the recoiling NO neutral fragments from NO-(H2O), with a progression consistent with vibrational excitation up to upsilon(NO) = 3 in the products. The correlation remains when D2O is substituted for H2O, implying the NO vibrational mode plays a role in the dissociation coordinate of the complex. In contrast, no correlation was observed between photoelectron kinetic energy and kinetic energy release from NO-(CD4). Consideration of the maximum available kinetic energy allows the binding energies to be detemined as 0.57 and 0.07 eV for NO-(H2O) and NO-(CD4), respectively.
authors.affiliation: Department of Chemistry and Biochemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla 92093-0340, CA, USA.
authors.forename: Berwyck L J
authors.initials: BL
authors.lastname: Poad
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Johnson
authors.forename: Robert E
authors.initials: RE
authors.lastname: Continetti
mesh_terms: D000838:Anions; D002627:Chemistry, Physical; D003903:Deuterium / Q000737:chemistry* / Q000378:metabolism; D006859:Hydrogen / Q000737:chemistry* / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D008697:Methane / Q000737:chemistry* / Q000378:metabolism; D009569:Nitric Oxide / Q000737:chemistry* / Q000378:metabolism; D056951:Photoelectron Spectroscopy / Q000379:methods*; D013816:Thermodynamics; D014732:Vibration; D014867:Water / Q000737:chemistry* / Q000378:metabolism
chemical_list: D000838:Anions; D014867:Water; D009569:Nitric Oxide; D006859:Hydrogen; D003903:Deuterium; D008697:Methane