CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
artículos
Título:
Dissociative Photoionization of sulfenylcarbonyl -C(O)S- compounds induced by synchrotron radiation
Autor/es:
MARIANA GERONÉS, MAURICIO F. ERBEN, EMILIANO CORTÉS, LUCAS RODRÍGUEZ PIRANI, MAOFA GE, ROSANA M. ROMANO, LI YAO AND CARLOS O. DELLA VÉDOVA
Revista:
REVISTA MEXICANA DE FíSICA
Referencias:
Año: 2008
ISSN:
0035-001X
Resumen:
Recently, we have started with the study of the shallow and core-shell electronic excitation and fragmentation dynamics of carbonylsulfenyl (XC(O)SY) compounds. By using synchrotron radiation in the range of 100-1000 eV, total ion yield (TIY) and partial ion yield (PIY) 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.
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