Table of Contents
Laser Chemistry
Volume 15 (1994), Issue 1, Pages 21-32

Matrix Isolation Study of the 193 nm Excimer Laser Photochemistry of Hexafluorobenzene

Department of Chemistry, University of Cincinnati, Cincinnati 45221, OH, USA

Received 2 May 1993

Copyright © 1994 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.


193 nm excimer laser irradiation of Ar/C6F6 samples during deposition onto a cryogenic surface has led to the formation and isolation of a range of products, the dominant being hexafluoro-Dewar benzene. Additional absorptions likely due to the previously unreported hexafluorobenzvalene were observed, along with extensive fragmentation and additional minor products. When either Cl2 or CCl4 was doped into the Ar/C6F6 sample as an electron trap, a number of additional product bands were noted. A few of these were destroyed by subsequent Hg arc irradiation, and at least one is tentatively assigned to the C6F6+ cation. A comparison to previous studies of the photochemistry of C6F6 is made.