Dissociative Photoionization of sulfenylcarbonyl -C(O)S- compounds induced by synchrotron radiation.

MARIANA GERONÉS; MAURICIO F. ERBEN; EMILIANO CORTES; LUCAS S. RODRIGUEZ PIRANI; MAOFA GE; ROSANA M. ROMANO; LI YAO; CARLOS O. DELLA VÉDOVA

REVISTA MEXICANA DE FíSICA

SOC MEXICANA FISICA

Año: 2010 vol. 56 p. 24 - 29

0035-001X

By using synchrotron radiation in the range of 100-1000 eV, total ion yield (TIY) spectra, as well as multicoincidence spectra (photoelectron-photoion coincidence, PEPICO, and photoelectron-photoion-photoion coincidence, PEPIPICO) were measured around the S 2p, Cl 2p, C 1s, O 1s, and F 1s transitions of the following carbonylsulfenyl (XC(O)SY) compounds: FC(O)SCl, ClC(O)SCl, CH3C(O)SH and CH3OC(O)SCl. Fragmentation patterns deduced from PEPICO spectra at various excitation energies in the VUV and soft X-ray regions were especially analyzed in order to establish the existence of a site-specific fragmentation effect. Also, ionic double coincidences were examined, and dissociation mechanisms were proposed to explain the shape and slope of observed PEPIPICO islands.