UV angle-resolved photoelectron spectra of mixed methylene dihalides using synchrotron radiation

I. Novak, J. M. Benson, A. W. Potts

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Photoelectron spectra for the dihalomethanes CH2BrCl, CH2ClI and CH2Br2 have been recorded with photons in the energy range 19-115 eV using Daresbury Laboratory Synchroton Radiation Source. Ionization energies have been measured for all valence falling within this energy including Br 3d and I 4d orbitals. Asymmetry parameters have been measured for all intense ionization processes and characteristic Cooper minima observed for halogen lone pair orbitals. For CH2ClI lone pair orbital β spectra show strong evidence of mixed halogen character although a similar situation is not observed for CH2BrCl. Partial photoionization cross sections are tabulated for the observed ionization processes. Detailed spectra are presented for the molecule CH2ClI since this appears to be the first photoelectron study of this molecule.

Original languageEnglish
Pages (from-to)129-138
Number of pages10
JournalChemical Physics
Volume107
Issue number1
DOIs
Publication statusPublished - 15 Aug 1986

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