Journal
CHEMPHYSCHEM
Volume 17, Issue 16, Pages 2465-2472Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201501118
Keywords
absolute configuration; chirality; cold target recoil ion momentum spectroscopy; Coulomb explosion imaging; synchrotron radiation
Funding
- Soleil Peer Review Committee [20130255, 20140056]
- Fonds der Chemischen Industrie
- Deutsche Studienstiftung
- Adolf Messer foundation
- State Initiative for the Development of Scientific and Economic Excellence (LOEWE) in the LOEWE focus ELCH
- German Federal Ministry of Education and Research (BMBF)
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The absolute configuration of individual small molecules in the gas phase can be determined directly by light-induced Coulomb explosion imaging (CEI). Herein, this approach is demonstrated for ionization with a single X-ray photon from a synchrotron light source, leading to enhanced efficiency and faster fragmentation as compared to previous experiments with a femtosecond laser. In addition, it is shown that even incomplete fragmentation pathways of individual molecules from a racemic CHBrClF sample can give access to the absolute configuration in CEI. This leads to a significant increase of the applicability of the method as compared to the previously reported complete break-up into atomic ions and can pave the way for routine stereochemical analysis of larger chiral molecules by light-induced CEI.
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