Short-time photodissociation dynamics of 1-chloro-2-iodoethane from resonance Raman spectroscopy

Abstract

We have obtained A-band absorption resonance Raman spectra of 1-chloro-2-iodoethane in cyclohexane solution. We have done preliminary time-dependent wavepacket calculations to simulate the resonance Raman intensities and absorption spectrum in order to learn more about the short-time photodissociation dynamics. We compare our preliminary results for 1-chloro-2-iodoethane with previous resonance Raman results for iodoethane and find that there appears to be more motion along non-C-I stretch modes for 1-chloro-2-iodoethane than for iodoethane. This is consistent with results of TOF photofragment spectroscopy experiments which indicate much more internal excitation of the photoproducts from 1-chloro-2-iodoethane photodissociation than the photoproducts from iodoethane photodissociation. © 1999 OPA (Overseas Publishers Association) N.V. Published by licensed under the Harwood Academic Publishers imprint, part of The Gordon and Breach Publishing Group.