Dissociative Photoionization of Methyl Thiochloroformate, ClC(O)SCH3, following Sulfur 2p, Chlorine 2p, Carbon 1s and Oxygen 1s Excitations

Abstract

The electronic transitions and the dissociativeionic photoionization mechanisms of gaseous ClC(O)SCH3have been investigated at the VUV and soft X-ray energyregions of S 2p, Cl 2p, C 1s, and O 1s core edges using tunablesynchrotron radiation and time-of-flight mass spectrometry.The relative abundances of the ionic fragments were obtainedfrom both PEPICO (photoelectron photoion coincidence)and PEPIPICO (photoelectron photoion photoion coincidence)spectra. The presence of a moderate site- and element-specific fragmentation effects and its implication regardingchemical reactions were analyzed. The relationship of the current results with the interstellar chemistry is also a goal of this pieceof work.