Reactions of Isomeric C3H3+ Ions: A Combined Low Pressure-High Pressure Study
摘要:
We report the results of a low-pressure (ICR) and high-pressure (SIFT) investigation of the ion-molecule reactions of C3H3+. Two isomeric forms of C3H3+ are present: HCCCH2+ and c-C3H3+. Rate coefficients and product ratios are reported for each technique for a variety of neutral reactants including H-2, NH3, C2H2, CH3OH, and CH3CN. Most reactions occur via a long-lived association complex. Large differences in reactivity and differences in product distributions between the two techniques are rationalized in terms of the association complex lifetime.
Reactions of Isomeric C3H3+ Ions: A Combined Low Pressure-High Pressure Study
作者:Murray J. McEwan、Cara L. McConnell、Colin G. Freeman、Vincent G. Anicich
DOI:10.1021/j100070a021
日期:1994.5
We report the results of a low-pressure (ICR) and high-pressure (SIFT) investigation of the ion-molecule reactions of C3H3+. Two isomeric forms of C3H3+ are present: HCCCH2+ and c-C3H3+. Rate coefficients and product ratios are reported for each technique for a variety of neutral reactants including H-2, NH3, C2H2, CH3OH, and CH3CN. Most reactions occur via a long-lived association complex. Large differences in reactivity and differences in product distributions between the two techniques are rationalized in terms of the association complex lifetime.
Temperature variable ion trap studies of C3Hn+ with H2 and HD
作者:I. Savi?、D. Gerlich
DOI:10.1039/b417965j
日期:——
with H2 while radiative association is slower. The most surprising result has been obtained for C3H(+) + HD. Here C3HD+ formation is over one hundred times faster than C3H2+. In addition to the details of the potentialenergysurface it may be that in this case an H-HD exchange reaction takes place via an open-chain propargyl cation intermediate (H2CCCH+). Reactions of C3H2+ and C3H3+ with H2 are very