Cationic and anionic fragmentation of dichloromethane following inner-shell (Cl 1s) photoexcitation |
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Authors: | Lago A F Dávalos J Z Kerdpin U Schlachter A S |
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Institution: | Department of Chemistry, University of North Carolina, Chapel Hill, NC 27599-3290, USA. alago@lnls.br |
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Abstract: | The cationic and anionic fragmentation of dichloromethane (CH2Cl2) molecule have been investigated in the energy range of the Cl K shell by using synchrotron radiation, ion yield spectroscopy, and electron-ion coincidence spectroscopy. Total and partial ion-yield and mass spectra have been recorded as a function of the photon energy. We were able to identify several singly and multiply charged cationic fragments and the following anionic species: H-; C-; Cl-. The present results provide the first experimental report of negative ion formation from a molecule excited at the Cl 1s edge. In addition, our electron-ion coincidence data provide strong evidence of the preservation of molecular alignment for the photodissociation of CH2Cl2 after deep core-electron resonant excitation. |
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