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A Selected Ion Flow Tube( SIFT), Study of the Reactions of H3O+, NO+ and O2+ Ions with a Series of Alkenes; in Support of SIFT-MS
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SYSNO ASEP 0181436 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title A Selected Ion Flow Tube( SIFT), Study of the Reactions of H3O+, NO+ and O2+ Ions with a Series of Alkenes; in Support of SIFT-MS Author(s) Diskin, A. M. (GB)
Wang, T. (GB)
Smith, D. (GB)
Španěl, Patrik (UFCH-W) RID, ORCIDSource Title International Journal of Mass Spectrometry. - : Elsevier - ISSN 1387-3806
Roč. 218, č. 1 (2002), s. 87-101Number of pages 15 s. Language eng - English Country NL - Netherlands Keywords SIFT ; alkenes ; proton transfer Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA203/00/0632 GA ČR - Czech Science Foundation (CSF) GA203/02/0737 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z4040901 - UFCH-W Annotation Abstract: We report the results of a detailed selected ion flow tube (SIFT) study at 300 K of the reactions of the 1-alkene and trans-2-alkene isomers of pentene, hexene, heptene, octene and nonene and I-decene (all liquids at room temperature) with H3O+, NO+ and O-2(+). All 33 reactions proceeded at the collisional rate under these SIFT conditions (helium carrier gas pressure of 0.7 Torr). The H3O+ reactions with both isomers of each alkene proceeded via exothermic proton transfer, which resulted in partial dissociation of the MH+ product ions for the longer chain alkene molecules, M, the number of fragment ions depending on the chain length. However, the mechanisms of the NO+ reactions were isomer specific, those involving the 1-alkenes proceeded via NO+ M production (three-body association) followed by partial stabilisation and partial dissociation of the nascent adduct ion to several products, including ions of the kind RHNO+ (R = CH3, C3H5, C4H7, etc,). Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2003
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