title: Site-dependent photodissociation of vibrationally excited CD3NH2.
abstract: The N-H and C-D bond fission in partially deuterated methylamine, CD(3)NH(2), has been investigated using vibrationally mediated photodissociation. Jet-cooled action spectra and Doppler profiles of the H and D photofragments were monitored following approximately 243.1 nm photodissociation of the parent pre-excited to two, three or four N-H stretch quanta. The action spectra were analyzed in terms of simplified local mode/normal mode (LM/NM) and NM models, allowing band assignment and determination of the strong resonances involved in the coupling. The Doppler profiles show that the released H and D photofragments have low translational energy content and that the H is the dominant product, although its yield decreases as higher pre-excited N-H vibrational states are dissociated. The dynamics of the site-dependent bond fission in CD(3)NH(2) is discussed.
authors.affiliation: Department of Physics, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
authors.forename: Ran
authors.initials: R
authors.lastname: Marom
authors.forename: Tal
authors.initials: T
authors.lastname: Weiss
authors.forename: Salman
authors.initials: S
authors.lastname: Rosenwaks
authors.forename: Ilana
authors.initials: I
authors.lastname: Bar
mesh_terms: D003903:Deuterium / Q000737:chemistry*; D008744:Methylamines / Q000737:chemistry*; D008958:Models, Molecular; D010782:Photolysis; D013057:Spectrum Analysis; D014732:Vibration
chemical_list: D008744:Methylamines; D003903:Deuterium; C027451:methylamine