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Ultrafast electron diffraction: structures in dissociation dynamics of Fe(CO)_5

Ihee, H. and Cao, J. and Zewail, A. H. (1997) Ultrafast electron diffraction: structures in dissociation dynamics of Fe(CO)_5. Chemical Physics Letters, 281 (1-3). pp. 10-19. ISSN 0009-2614. https://resolver.caltech.edu/CaltechAUTHORS:20160824-074503286

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Abstract

We report on the application of ultrafast electron diffraction (UED) to the study of complex molecular reactions, the dissociation of Fe(CO)_5. Snapshots of the diffraction images were recorded at different reaction times. The reaction was initiated by a femtosecond pulse and clocked accurately within 2 ps. The dissociation is complete in less than 10 ps and we identify major product distributions and structures; Fe(CO)_2, Fe(CO) and Fe in the branching ratio of ca. 2:5:5. The C–O distance becomes longer, relative to that of Fe(CO)_5, suggesting a non-systematic weaker C–O bond in Fe(CO)_2 and Fe(CO) fragments. The temporal diffraction-difference method greatly enhances the ability of recording structural changes in UED.


Item Type:Article
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URLURL TypeDescription
http://dx.doi.org/10.1016/S0009-2614(97)01167-6DOIArticle
http://www.sciencedirect.com/science/article/pii/S0009261497011676PublisherArticle
Additional Information:© 1997 Elsevier Science B.V. Received 15 September 1997; in final form 6 October 1997. This work was supported by a grant from the Air force Office of Scientific Research, the Office of Naval Research and the Laboratory for Molecular Sciences. We thank Chuck Williamson for his interest and initial efforts.
Funders:
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)UNSPECIFIED
Office of Naval Research (ONR)UNSPECIFIED
NSFUNSPECIFIED
Issue or Number:1-3
Record Number:CaltechAUTHORS:20160824-074503286
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20160824-074503286
Official Citation:H Ihee, J Cao, A.H Zewail, Ultrafast electron diffraction: structures in dissociation dynamics of Fe(CO)5, Chemical Physics Letters, Volume 281, Issues 1–3, 19 December 1997, Pages 10-19, ISSN 0009-2614, http://dx.doi.org/10.1016/S0009-2614(97)01167-6. (http://www.sciencedirect.com/science/article/pii/S0009261497011676)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69874
Collection:CaltechAUTHORS
Deposited By: Ruth Sustaita
Deposited On:26 Aug 2016 17:30
Last Modified:03 Oct 2019 10:26

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