Journal
EUROPEAN JOURNAL OF MASS SPECTROMETRY
Volume 21, Issue 3, Pages 557-567Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1255/ejms.1332
Keywords
mass spectrometry; rhenium oxide anions; ion-molecule reactions
Funding
- Australian Research Council (ARC) via the ARC Centre of Excellence for Free Radical Chemistry and Biotechnology
- Australian Research Fellowship
- University G. d'Annunzio of Chieti-Pescara
- Italian Ministry of Education, University and Research
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The ion-molecule reactions of the rhenium oxide anions, [ReOx](-)(x = 2-4) with the organic substrates methane, ethene, methanol, and acetic acid have been examined in a linear ion trap mass spectrometer. The only reactivity observed was between [ReO2](-) and acetic acid. Isotope-labelled experiments and high-resolution mass spectrometry measurements were used to assign the formulas of the ionic products. Collision-induced dissociation and ion-molecule reactions with acetic acid were used to probe the structures of the mass-selected primary product ions. Density functional theory calculations [PBE0/LanL2DZ6-311+G(d)] were used to suggest possible structures. The three primary product channels observed are likely to arise from the formation of the metallalactone [ReO2(CH2CO2)](m/z 277) and H-2, [CH3ReO2(OH)](-)(m/z 251) and CO, and [ReO3]-(m/z 235), H-2 and CH2CO.
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