CEQUINOR   05415
CENTRO DE QUIMICA INORGANICA "DR. PEDRO J. AYMONINO"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Ion Fragmentation of Selenium Oxychloride under VUV Irradiation
Autor/es:
RODRIGUEZ PIRANI, LUCAS S.; ERBEN, MAURICIO F.; CAVASSO FILHO, REINALDO L.; ROMANO, ROSANA M.; GERONES, MARIANA; DELLA VEDOVA, CARLOS O.
Lugar:
Campinas, Brasil
Reunión:
Congreso; 20ª Reunião Anual de Usuários (RAU), Laboratório Nacional de Luz Síncrotron; 2010
Institución organizadora:
Laboratório Nacional de Luz Síncrotron
Resumen:
Our research group has quite recently started studying the properties of shallow- and inner-core level electrons in sulfur-containing compounds. Thus, sulfenylcar- bonyl species[1¡5] and thiocyanates species[6;7], have been studied by using syn- chrotron radiation and multicoincidence techniques. The recent development of a neon gas ¯lter in the TGM line at the Brazilian Synchrotron National Laboratory, has allowed us to expand the study on the electronic properties and photoionization dynamics into the valence region. Thus, sulfenylcarbonyl compounds like FC(O)SCl [8], ClC(O)SCl[8] and CH3C(O)SCH3[9] have been recently analyzed in this energy range. Following these studies, we became interested in selenium-containing compounds. Thus, the selenium oxychloride was the ¯rst molecule chosen to be studied.In the present work, we report preliminary results concerning the photodissociation of this molecule in the 12-300 eV range. This energy range allows us to record the Se 3d, Se 3p, Se 3s and Cl 2p edges togheter with the valence region. Speciall interest should be paied in the selenium 3d and 3p region, as comparing with the S 2p edge. Total Ion Yield (TIY) and PhotoElectronPhotoIon Coincidence (PEPICO) spectra have been measured under VUV irradiation. The isotopic distribution of the selenium and chlorine is clearly observed in the TOF spectra due to the suitable mass resolution attained in the experiments.Acknowledgements: This work was supported by LNLS under proposal D05A-TGM-8737, Departamento de Qu¶³mica, Facultad de Ciencias Exactas, UNLP, CONICET, CIC,ANPCyT. [1] M. F. Erben, R. M. Romano, C. O. Della V¶edova, J. Phys. Chem. A. 2004,108, 3938-3946. [2] M. Geron¶es, M. F. Erben, R. M. Romano, C. O. Della V¶edova, J.Electron Spectrosc. Relat. Phenom. 2007, 155, 64-69. [3] M. F. Erben, R. M. Romano,C. O. Della V¶edova, J. Phys. Chem. A. 2005, 109, 304-313. [4] M. F. Erben, M. Geron¶es,R. M. Romano, C. O. Della V¶edova, J. Phys. Chem. A. 2006, 110, 875-883. [5] M. F.Erben, M. Geron¶es, R. M. Romano, C. O. Della V¶edova, J. Phys. Chem. A. 2007, 111,8062-8071. [6] E. Cort¶es, M. F. Erben, M. Geron¶es, R. M. Romano, C. O. Della V¶edova,J. Phys. Chem. A. 2009, 113, 564-572. [7] E. Cort¶es, M. F. Erben, M. Geron¶es, R. M.Romano, C. O. Della V¶edova, J. Phys. Chem. A. 2009, 113, 9624-9632. [8] M. Geron¶es,M. F. Erben, R. M. Romano, C. O. Della V¶edova, L. Yao, M. Ge, J. Phys. Chem. A.2008, 112, 2228-2234. [9] M. Geron¶es, A. J. Downs, M. F. Erben, M. Ge, R. M. Romano,L. Yao, C. O. Della V¶edova, J. Phys. Chem. A. 2008, 112, 5947-5953.
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