The kinetics and product state distributions from gas-phase reactions of small atomic and molecular cations with C2H4, C2H3F, 1,1-C2H2F2, C2HF3 and C2F4.
The kinetics and product state distributions from gas-phase reactions of small atomic and molecular cations with C2H4, C2H3F, 1,1-C2H2F2, C2HF3 and C2F4.
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小原子和分子阳离子与 C2H4、C2H3F、1,1-C2H2F2、C2HF3 和 C2F4 的气相反应的动力学和产物状态分布。
DOI:
10.1039/c3cp54881c
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Parkes MA
中科院分区:
文献类型:
--
作者:
Parkes MA
The reactions of twenty one gas-phase cations with C2H3F, 1,1-C2H2F2, C2HF3 and C2F4 have been studied in a selected ion flow tube at 298 K. The cations are both atomic and molecular with recombination energies in the range 6–22 eV, and the kinetics and branching ratios into product ions are revealed for all the reactions. These data, together with that from an earlier study of reactions of CxFy+ with these four fluorinated ethenes (J. Phys. Chem. A., 2012, 116, 8119), are compared with the reactions of these ions with C2H4, where available. Nearly all the reactions have a rate coefficient close to the collisional value calculated by either Langevin or modified average dipole orientation theories. The products of the reactions of N+ and N2+ with C2H4 are found to be anomalous, compared to their reactions with the four fluorinated ethenes. The branching ratios into product cations are compared with those from a high resolution (ca. 0.002 eV) photoionisation (hν = 10–22 eV) study of C2H3F, 1,1-C2H2F2, C2HF3 and C2F4 (Phys. Chem. Chem. Phys., 2012, 14, 3935) in order to gauge the importance of electron transfer in ion–molecule reactions. The higher the recombination energy of the cation, the better the agreement between the two sets of product branching ratios. Where there is disagreement at lower recombination energies, it appears that there is more fragmentation of the products in the photoionisation experiment compared to the ion–molecule reactions.
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影响因子:
2.8
作者:
David R. Smith;N. Adams
通讯作者:
N. Adams
影响因子:
2.8
作者:
A. B. Rakshit;N. Twiddy
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N. Twiddy
影响因子:
4.4
作者:
B. A. Williams;T. Cool
通讯作者:
T. Cool
DOI:
10.1021/j100125a020
发表时间:
1993
期刊:
The Journal of Physical Chemistry
影响因子:
--
作者:
R. Morris;A. Viggiano;J. Paulson
通讯作者:
J. Paulson
DOI:
10.1016/0020-7381(74)83017-2
发表时间:
1974
期刊:
International Journal of Mass Spectrometry and Ion Physics
影响因子:
--
作者:
V. Anicich;M. Bowers
通讯作者:
M. Bowers