Stuttgart 2012 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 6: Poster

MS 6.8: Poster

Dienstag, 13. März 2012, 16:30–19:00, Poster.IV

Normal and inverse H/D-isotope effects in the reactions of size selected transition metal cluster ions with aromatic hydrocarbon molecule — •Christine Merkert, Matthias Tombers, Lars Barzen, Anke Stamm, Maximilian Gaffga, and Gereon Niedner-Schatteburg — TU Kaiserslautern, Fachbereich Chemie und Foschungszentrum OPTIMAS, 67663 Kaiserslautern, Germany

Isolated transition metal cluster ions have been subject of reactivity studies ever since appropriate ion sources became available. We have utilized high resolution mass spectrometry in conjunction with ion trapping for the investigation of aromatic hydrocarbon reactivity of Iron, Cobalt and Nickel cluster cations and anions in the cluster size range from 3 to 30 atoms per cluster under single collision conditions. The measurements serve to determine relative rate constants for various reaction channels observed. Reaction rates of normal and perdeuterated reactants reveal remarkable isotope effects, that are in part normal and in part inverse. Mechanistic interpretations are to discuss.