Table of Contents
Laser Chemistry
Volume 7, Issue 5-6, Pages 297-304

Photodissociation of CH2ClCH2I at 308 nm

1Materials and Molecular Research Division, Lawrence Berkeley Laboratory and Department of Chemistry, University of California, Berkeley 94720, CA, USA
2Dept. of Chemistry, University of Illinois, Urbana 61801, IL, USA

Received 25 August 1986; Accepted 8 December 1986

Copyright © 1987 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.


The technique of photofragmentation translational spectroscopy has been used to study the photodissociation of CH2ClCH2I at an excitation wavelength of 308 nm. The exclusive dissociation pathway is C–I bond breakage with formation of CH2ClCH2 and I(2P3/2). The centre-of-mass translational energy distribution of the photofragments reveals that an average of about 50% of the excess energy appears in translation. The angular distribution of dissociation products with respect to the laser polarization indicates that the photodissociation process proceeds via a parallel transition—i.e., the transition moment must be nearly parallel to the C–I bond. Exclusive production of ground state I(2P3/2) with a parallel polarization dependence is unexpected based on the prevailing picture for alkyl iodide photodissociation.