Reactions of carbon cluster ions with small hydrocarbons
Reactions of carbon cluster ions with small hydrocarbons
复制标题
碳簇离子与小碳氢化合物的反应
DOI：
10.1063/1.455103
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
S. Mcelvany
中科院分区：
文献类型：
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作者：
S. Mcelvany
利用傅里叶变换质谱研究了激光产生的碳团簇离子C+n（n=3-20）与中性碳氢化合物CH 4、C2 H2和C2 H4的离子/分子反应。支化比和速率常数的报告所观察到的反应。的反应和提出的机制与以前的结果是一致的，并建议从线性到环状的n=9和10之间的簇离子的结构变化。提出的反应机理包括碳烯插入反应物中性分子的C-H键和不饱和C-C键。团簇离子与不饱和烃C_2H_2和C_2H_4的反应是第一个环状（n≥10）团簇离子反应的体系。碳团簇离子与含碳中性粒子的反应性的结果进行了讨论的稳定性对碳原子的添加和集群的增长。进一步的证据是报告的存在下的结构异构体（线性和环状）的C+7.
The ion/molecule reactions of laser‐generated carbon cluster ions, C+n (n=3–20), with the neutral hydrocarbons CH4, C2H2, and C2H4 are studied using Fourier transform mass spectrometry. Branching ratios and rate constants are reported for the observed reactions. The reactions and proposed mechanisms are consistent with previous results and suggest a structural change of the cluster ions from linear to cyclic between n=9 and 10. The proposed reaction mechanisms include carbene insertion into both the C–H bonds and the unsaturated C–C bonds of the reactant neutrals. The reactions of the cluster ions with the unsaturated hydrocarbons C2H2 and C2H4 are the first systems in which the cyclic (n≥10) cluster ions are reactive. The results of the reactivity of the carbon cluster ions with the carbon‐containing neutrals are discussed in terms of the stability of the clusters toward carbon atom addition and cluster growth. Further evidence is reported for the presence of structural isomers (linear and cyclic) of C+7...