The pump-probe technique has been employed to study the photodissociation processes of sulfur dioxide (SO2). The SO2+ transient has been fit to a biexponential with decay times of 230 ± 9 fs and 8 ± 4 ps. The growth of 32SO+ was determined to be 225 ± 10 fs with a decay of 373 ± 27 fs. The response of the isotope 34SO2+ was also fit to biexponential decay with lifetimes of 195 ± 14 fs and 4 ± 1 ps. The decay of 34SO+ was fit to 381 ± 30 fs. The results display that an inverse kinetic isotope effect is operative during dissociation of SO2 through the Ẽ state.
All Science Journal Classification (ASJC) codes
- Physical and Theoretical Chemistry