Laser Chemistry

Laser Chemistry / 1988 / Article
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IR Multiple Photon

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Volume 8 |Article ID 704096 | https://doi.org/10.1155/LC.8.211

Shuji Kato, Yoshihiro Makide, Takeshi Tominaga, Kazuo Takeuchi, "Infrared Multiphoton Dissociation of CF3CHClF: Primary Dissociation and Secondary Photolysis", Laser Chemistry, vol. 8, Article ID 704096, 24 pages, 1988. https://doi.org/10.1155/LC.8.211

Infrared Multiphoton Dissociation of CF3CHClF: Primary Dissociation and Secondary Photolysis

Received06 Aug 1987
Accepted10 Sep 1987

Abstract

The dissociation yield and branching ratio in CO2 laser-induced infrared multiphoton dissociation (IRMPD) of CF3CHClF were investigated by irradiation at 9R(20) 1078.6 cm−1 under an unfocused irradiation geometry (0.75-2.3 J/cm2) and a mildly focused one (1.2-18 J/cm2). By using a Br2-scavenging technique, it was revealed that the primary dissociation of CF3CHClF proceeded mainly via three-centered HCl molecular elimination and C-Cl bond rupture, with minor contributions of C-C bond rupture and HF molecular elimination at higher fluences. The secondary photolysis of the primarily produced species during the laser pulse to yield CF2 and CClF carbenes depended strongly upon the laser fluence.

Copyright © 1988 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


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