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.
复制标题

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
复制
发表时间:
2014
期刊:
PCCP
影响因子:
--
通讯作者:
Parkes MA
Parkes MA
中科院分区:
--
文献类型:
--
作者:
Parkes MA

文献摘要

参考文献

相似文献

在离子流管中,研究了21种气相阳离子与C_2H_3F、1,1-C_2H_2F_2、C_2HF_3和C_2F_4的反应。的阳离子是原子和分子的范围内的6-22 eV的重组能量,和动力学和分支比到产品离子揭示了所有的反应。这些数据,连同来自CxFy+与这四种氟化乙烯的反应的早期研究的数据(J. Phys. Chem. A.,2012,116,8119)与这些离子与C2 H4的反应进行比较。几乎所有的反应都有一个速率系数接近的碰撞值计算的Langevin或修改的平均偶极取向理论。发现N+和N2+与C_2H_4反应的产物比它们与四种氟化乙烯反应的产物更反常。将产物阳离子的分支比与高分辨率(ca. 0.002 eV)光电离(hν = 10-22 eV)研究C2 H3 F、1,1-C2 H2 F2、C2 HF 3和C2 F4(Phys. Chem. Chem. Phys.,2012,14,3935),以测量离子-分子反应中电子转移的重要性。阳离子的复合能越高,两组产物分支比之间的一致性越好。在较低的复合能量下存在分歧的地方,与离子-分子反应相比,在光电离实验中似乎存在更多的产物碎片。
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.
NH+n 和 ND+n (n = 0–4) 与 C2H4 和 C2D4 在 300 K 下的反应
DOI: 10.1016/0009-2614(80)80639-7
发表时间: 1980
影响因子: 2.8
作者:
David R. Smith;N. Adams
通讯作者: N. Adams
热能氖离子的测量——中性反应速率系数和产物离子分布
DOI: 10.1016/0009-2614(79)80597-7
发表时间: 1979
影响因子: 2.8
作者:
A. B. Rakshit;N. Twiddy
通讯作者: N. Twiddy
喷射冷却 C2H4 和 C2D4 里德伯态的双光子光谱
DOI: 10.1063/1.460314
发表时间: 1991
影响因子: 4.4
作者:
B. A. Williams;T. Cool
通讯作者: T. Cool
CnFm 离子与 C2F4 和其他全氟化碳的反应
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
氟乙烯母离子的离子化学 氟乙烯混合物中的热能反应
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