Počet záznamů: 1  

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

  1. 1.
    0181436 - UFCH-W 20020102 RIV NL eng J - Článek v odborném periodiku
    Diskin, A. M. - Wang, T. - Smith, D. - Španěl, Patrik
    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.
    International Journal of Mass Spectrometry. Roč. 218, č. 1 (2002), s. 87-101. ISSN 1387-3806. E-ISSN 1873-2798
    Grant CEP: GA ČR GA203/00/0632; GA ČR GA203/02/0737
    Výzkumný záměr: CEZ:AV0Z4040901
    Klíčová slova: SIFT * alkenes * proton transfer
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.134, rok: 2002

    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,).
    Trvalý link: http://hdl.handle.net/11104/0078007

     
     

Počet záznamů: 1  

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