DOI: 10.1063/1.2140700. Excited state molecular structures and reactions directly determined by ultrafast electron diffraction

Excited state molecular structures and reactions directly determined by ultrafast electron diffraction

10.1063/1.2140700

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

In this communication, we report on the use of ultrafast electron diffraction to determine structural dynamics of excited states and reaction products of isolated aromatic carbonyls, acetophenone and benzaldehyde. For a 266nm excitation, a bifurcation of pathways is structurally resolved, one leading to the formation of the triplet state (quinoid structure) and another to chemical products: for benzaldehyde the products are benzene and carbon monoxide (hydrogen migration and bond rupture) while those for acetophenone are the benzoyl and methyl radicals (bond rupture). The refined structures are compared with those predicted by theory. These dark structures and their radiationless transitions define the reduced energy landscape for complex reactions.

Bibliography

Feenstra, J. S., Park, S. T., & Zewail, A. H. (2005). Excited state molecular structures and reactions directly determined by ultrafast electron diffraction. The Journal of Chemical Physics, 123(22).

Authors 3

Jonathan S. Feenstra (first)
Sang Tae Park (additional)
Ahmed H. Zewail (additional)

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Dates

Type	When
Created	19 years, 8 months ago (Dec. 22, 2005, 6:02 p.m.)
Deposited	2 years ago (July 25, 2023, 3:26 a.m.)
Indexed	3 weeks, 4 days ago (July 30, 2025, 6:45 a.m.)
Issued	19 years, 8 months ago (Dec. 8, 2005)
Published	19 years, 8 months ago (Dec. 8, 2005)
Published Online	19 years, 8 months ago (Dec. 14, 2005)
Published Print	19 years, 8 months ago (Dec. 8, 2005)

Funders 0

None

BibTeX

@article{Feenstra_2005, title={Excited state molecular structures and reactions directly determined by ultrafast electron diffraction}, volume={123}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.2140700}, DOI={10.1063/1.2140700}, number={22}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Feenstra, Jonathan S. and Park, Sang Tae and Zewail, Ahmed H.}, year={2005}, month=dec }

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