Ultrafast carbene-carbene isomerization

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作者：
Wang, Jin [1 ]
Burdzinski, Gotard [1 ,2 ]
Kubicki, Jacek [1 ,2 ]
Gustafson, Terry L. [1 ]
Platz, Matthew S. [1 ]
机构：
[1] Department of Chemistry, Ohio State University, Columbus, OH 43210, United States
[2] Quantum Electronics Laboratory, Faculty of Physics, Adam Mickiewicz University, 85 Umultowska, Poznan 61-614, Poland
来源：
| 1600年 / American Chemical Society, Columbus, OH 43210-3337, United States卷 / 130期
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摘要：
The photochemistry of two isomeric aryl diazo ketones was investigated by fs time-resolved UV-vis and IR spectroscopies. Both diazo ketone excited states decompose in less than 300 fs by multiple pathways. One pathway involves concerted Wolff rearrangement and nitrogen extrusion, most likely in the syn rotomer. In the anti rotomer of one isomer, oxygen migration proceeds in concert with nitrogen extrusion to form rearranged keto carbene. This rotomer excited state also decomposes to form unrearranged carbene, which isomerizes in 5 ps. Copyright © 2008 American Chemical Society.
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