TY - JOUR
T1 - Site-dependent photodissociation of vibronically excited CD3 NH2 molecules
AU - Marom, Ran
AU - Weiss, Tal
AU - Rosenwaks, Salman
AU - Bar, Ilana
N1 - Funding Information:
Financial support from the Israel Science Foundation founded by The Israel Academy of Science and Humanities and the James Franck Binational German-Israeli Program in Laser-Matter Interaction is gratefully acknowledged. The authors also wish to thank Professor R. Kosloff and Dr. C. Levi for fruitful discussions.
PY - 2010/6/28
Y1 - 2010/6/28
N2 - The mechanism of H and D atom loss, following ultraviolet photolysis of methylamine- d3, CD3 NH2, has been studied via electronic action and Doppler spectroscopies. The N-H bond is preferentially cleaved and the yield of both H and D photofragments increases gradually, but differently, as higher vibrational states on the first excited electronic state, Ã, are accessed, leading to some drop in H/D branching ratios. The average translational energies of the H photofragments are somewhat higher than those of D, implying lower energy content left in the internal degrees of freedom of the CD3 NH than in the CD2 NH2 partner fragment. These results provide evidence for discrimination between the two channels and mechanistic insight into the N-H and C-D bond cleavage.
AB - The mechanism of H and D atom loss, following ultraviolet photolysis of methylamine- d3, CD3 NH2, has been studied via electronic action and Doppler spectroscopies. The N-H bond is preferentially cleaved and the yield of both H and D photofragments increases gradually, but differently, as higher vibrational states on the first excited electronic state, Ã, are accessed, leading to some drop in H/D branching ratios. The average translational energies of the H photofragments are somewhat higher than those of D, implying lower energy content left in the internal degrees of freedom of the CD3 NH than in the CD2 NH2 partner fragment. These results provide evidence for discrimination between the two channels and mechanistic insight into the N-H and C-D bond cleavage.
UR - http://www.scopus.com/inward/record.url?scp=77954180018&partnerID=8YFLogxK
U2 - 10.1063/1.3447383
DO - 10.1063/1.3447383
M3 - Article
AN - SCOPUS:77954180018
SN - 0021-9606
VL - 132
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
IS - 24
M1 - 244310
ER -