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

Kim, Sang Kyu and Zewail, Ahmed H. (1996) Femtosecond elementary dynamics of transition states and asymmetric α-cleavage in Norrish reactions. Chemical Physics Letters, 250 (3-4). pp. 279-286. ISSN 0009-2614. http://resolver.caltech.edu/CaltechAUTHORS:20160825-074652497

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Abstract

In this Letter, we report studies of the femtosecond dynamics of transition states and asymmetric α-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 α-cleavage are resolved. We compare experimental results with theoretical predictions of impulsive and statistical models.


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http://dx.doi.org/10.1016/0009-2614(96)00018-8DOIArticle
http://www.sciencedirect.com/science/article/pii/0009261496000188PublisherArticle
Additional Information:© 1996 Elsevier B.V. Received 21 December 1995. This research was supported by grants from the Air Force Office of Scientific Research and by the National Science Foundation. We wish to thank Mr. Ju Guo and Mr. Brent Horn for their help with some of the experiments and for useful suggestions.
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Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
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Record Number:CaltechAUTHORS:20160825-074652497
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20160825-074652497
Official Citation:Sang Kyu Kim, Ahmed H. Zewail, Femtosecond elementary dynamics of transition states and asymmetric α-cleavage in Norrish reactions, Chemical Physics Letters, Volume 250, Issues 3–4, 1 March 1996, Pages 279-286, ISSN 0009-2614, http://dx.doi.org/10.1016/0009-2614(96)00018-8. (http://www.sciencedirect.com/science/article/pii/0009261496000188)
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ID Code:69919
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Aug 2016 16:08
Last Modified:26 Aug 2016 16:08

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