✦ LIBER ✦

Femtosecond elementary dynamics of transition states and asymmetric α-cleavage in Norrish reactions

✍ Scribed by Sang Kyu Kim; Ahmed H. Zewail

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 624 KB
Volume: 250
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(96)00018-8

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✦ Synopsis

In this Letter, we report studies of the femtosecond dynamics of transition states and asymmetric a-cleavage in Norrish type-I reactions. Systematically, we consider the dynamics of dissociation along two reaction coordinates in methyl ethyl ketone and diethyl ketone, and compare these results with those of dimethyl ketone and methyl chloro ketone. The concept of concertedness as the system moves away from the transition-state region is examined and the primary and secondary processes involved in the a-cleavage are resolved. We compare experimental results with theoretical predictions of impulsive and statistical models.

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