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Selected Ion Flow Tube Study of Ion Molecule Reactions of N+(P-3) and Kr+ with C-3 Hydrocarbons Propane, Propene, and Propyne
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SYSNO ASEP 0360933 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Selected Ion Flow Tube Study of Ion Molecule Reactions of N+(P-3) and Kr+ with C-3 Hydrocarbons Propane, Propene, and Propyne Author(s) Dryahina, Kseniya (UFCH-W) RID, ORCID
Cunha de Miranda, B. K. (FR)
Španěl, Patrik (UFCH-W) RID, ORCID
Žabka, Ján (UFCH-W) RID, ORCID, SAI
Alcaraz, C. (FR)
Herman, Zdeněk (UFCH-W) RIDSource Title Journal of Physical Chemistry A. - : American Chemical Society - ISSN 1089-5639
Roč. 115, č. 25 (2011), s. 7310-7315Number of pages 6 s. Language eng - English Country US - United States Keywords N+ ions ; reactions relevant ; titans ionosphere Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects IAA400400702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) OC10046 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) CEZ AV0Z40400503 - UFCH-W (2005-2011) UT WOS 000291895500068 DOI 10.1021/jp200787d Annotation Reactions of N-14(+)(P-3), N-15(+)(P-3), and Kr+ with propane, propene, and propyne were studied using the selected ion flow tube, SIFT, technique. Thermal rate constants in all N+/C-3 systems were k = (2 +/- 0.4) x 10(-9) cm(3) molecule(-1)s(-1) close to the collisional rate constants. With propane and propene, only hydrocarbon ions were found among the products of reactions with N+; in propyne about 15% of the products were N-containing ions (C3H2N+, C2H4N+, C2H3N+, C2H2N+), and the rest were hydrocarbon ions. A comparison with product ions from electron transfer between Kr+ (of recombination energy similar to that for N+(P-3)) and the C-3 hydrocarbons and further analysis of the results led to an estimation of an approximate ratio of electron transfer vs hydride-ion transfer reactions leading to the hydrocarbon product ions: in propane the ratio was 2:1, in propene 3:1, and in propyne 5:1. A fraction of product ions resulted from reactions leading to the excited neutral product N*. Workplace J. Heyrovsky Institute of Physical Chemistry Contact Michaela Knapová, michaela.knapova@jh-inst.cas.cz, Tel.: 266 053 196 Year of Publishing 2012
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