Theoretical studies on the reaction mechanism of HNCS with CH2CH radical

被引:10
|
作者
Xu, Jian-Hua
Li, Lai-Cai [1 ]
Zheng, Yan
Liu, Jun-Ling
Wang, Xin
机构
[1] Sichuan Normal Univ, Dept Chem, Chengdu 610066, Peoples R China
[2] Fuling Normal Coll, Dept Chem, Chongqing 408003, Peoples R China
[3] Sichuan Univ, Fac Chem, Chengdu 610064, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
CH2CH radical; isothiocyanic acid; density functional theory; reaction mechanism; activation energy;
D O I
10.1142/S0219633607002794
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The reaction mechanisms of HNCS with CH2CH radical have been investigated by density functional theory (DFT). The geometries and harmonic frequencies of the reactants, intermediates, transition states and products have been calculated at the B3LYP/6-311++G(d,p) level. The results show that the reaction is very complicated. Nine possible reaction pathways were identified. The results show that the most feasible reaction channel is the hydrogen-transfer pathway CH2CH + HNCS -> IMA1 -> TSA1 -> CH2CHH+ NCS. The pathway VIC C-S addition channel (CH2CH+ HNCS -> TSD5 -> IMD4 -> TSD9 -> CH2CHS + CNH) can also occur easily. Ethene and radical NCS is the main product of the studied reaction, and product P8 (CH2CHS and CNH) may also be observed. Compared with our previous study on the reaction HNCS + CH2CH, the present reaction is easier to proceed.
引用
收藏
页码:1 / 12
页数:12
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