Ultrafast absorption spectroscopy of photodissociated CF2Br2: Details of the reaction mechanism and evidence for anomalously slow intramolecular vibrational redistribution within the CF2Br intermediate

Article abstract of DOI:10.1063/1.460429

Ultrafast time-resolved absorption spectroscopy in the hard ultraviolet has been used to investigate the photodissociation of gas-phase CF2Br2 photolyzed at 248 nm.The broadband spectra obtained in the 250-265 nm region have shown that absorption of a single photon activates a two-step sequential elimination of the molecule's two bromine atoms, leaving the product CF2 radical in the ground or first-excited vibrational state of its ν₂ bending mode.The spectra also demonstrate the direct detection of the vibrationally hot CF2Br intermediate species itself.We interpret the <*>6 ps time scale over which the diffuse CF2Br spectrum evoles as evidence for slow intramolecular vibrational redistribution within this molecule.

Full text of DOI:10.1063/1.460429

Ultrafast absorption spectroscopy of photodissociated CF2Br2: Details of the
reaction mechanism and evidence for anomalously slow intramolecular vibrational
redistribution within the CF2Br intermediate
T. R. Gosnell, A. J. Taylor, and J. L. Lyman
Citation: The Journal of Chemical Physics 94, 5949 (1991); doi: 10.1063/1.460429
View online: http://dx.doi.org/10.1063/1.460429
View Table of Contents: http://scitation.aip.org/content/aip/journal/jcp/94/9?ver=pdfcov
Published by the AIP Publishing
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This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.24.51.181 On: Mon, 24 Nov 2014 14:15:07

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.24.51.181 On: Mon, 24 Nov 2014 14:15:07

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.24.51.181 On: Mon, 24 Nov 2014 14:15:07

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.24.51.181 On: Mon, 24 Nov 2014 14:15:07

This article is copyrighted as indicated in the article. Reuse of AIP content is subject to the terms at: http://scitation.aip.org/termsconditions. Downloaded to IP:
129.24.51.181 On: Mon, 24 Nov 2014 14:15:07