State-Resolved Photofragmentation of OCS Monomers and Clusters

Article abstract of DOI:10.1021/j100263a008

Dissociation of the OCS monomer at 222 nm yields S(¹D) and S(³P) in the ratio 0.85/0.15 and CO which is >98percent in ν=0 but wih very high rotational energy.The peak in the rotational distribution occurs at J=55 and corresponds to about 56percent of the available energy for the S(¹D) channel.These results support contention that the upper OCS ¹Δ state is bent.Dissociation of OCS clusters leads to a completely different photochemistry: at least some of the CO is formed rotationally cold (T_rot=50 K), and S2 is also produced.