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FC(O)O自由基与NO2反应的量子化学研究
Quantum Chemical Study on Reaction of FC(O)O Radical with NO2
【摘要】 用量子化学DFT,MP2,G3和G3MP2方法对FC(O)O自由基与NO2的反应机理进行了理论研究.优化了反应势能面上各驻点的几何结构, 通过内禀反应坐标(IRC)计算和振动分析, 确认了反应中的过渡态, 并用过渡态理论(TST)计算了相关反应的速率常数.
【Abstract】 The reaction mechanism of FC(O)O radical with NO2 was studied by means of quantum chemi- cal methods. The geometries for all the stationary points on the potential energy surfaces were optimized fully at the B3LYP/6-311++G(3df,3pd), MP2/6-311++G**, G3 and G3MP2 levels, respectively. All the transition states were verified by the intrinsic reaction coordinate (IRC) calculations at the B3LYP/6-311+ +G (3df,3pd) level. The reaction coefficients for the elementary reactions were calculated by transition states theory (TST).
【关键词】 FC(O)O;
NO2;
反应机理;
量子化学;
过渡态理论;
【Key words】 FC(O)O; NO2; reaction mechanism; quantum chemistry; transition state theory;
【Key words】 FC(O)O; NO2; reaction mechanism; quantum chemistry; transition state theory;
【基金】 重庆市自然科学基金(No. 2002-7473)资助项目.
- 【文献出处】 化学学报 ,Acta Chimica Sinica , 编辑部邮箱 ,2005年08期
- 【分类号】O621.13
- 【被引频次】3
- 【下载频次】136