Reaction mechanism duality in O(1D2)+CD4-->OD+CD3 identified from scattering distributions of rotationally state selected CD3.
Reaction mechanism duality in O(1D2)+CD4-->OD+CD3 identified from scattering distributions of rotationally state selected CD3.
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DOI：
10.1039/b815519d
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发表时间：
2008-12
期刊：
影响因子：
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通讯作者：
H. Kohguchi;Y. Ogi;Toshinori Suzuki
中科院分区：
文献类型：
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作者：
H. Kohguchi;Y. Ogi;Toshinori Suzuki
研究了碰撞能量为5.6 kcal/mol的O（1D2）与氘化甲烷反应中旋转态选择CD3产物的散射分布。非激振CD3的正向散射和反向散射特征明显不同，为该基准体系中基态势能面和激发态势能面分别存在插入和抽离双重反应机制提供了实验证据。在较高的旋转状态下，CD3的角分布逐渐出现正向后对称，这表明密切配合物产生了旋转温度更高的CD3。
The scattering distributions of rotationally state-selected CD3 products in the O(1D2) reaction with deuterated methane at a collision energy of 5.6 kcal/mol were investigated. Markedly different features were found between the forward and backward scatterings of rovibrationally unexcited CD3, which provides the experimental evidence of the dual reaction mechanisms, i.e., insertion and abstraction on the ground- and excited-state potential energy surfaces, respectively, in this benchmark system. The gradual emergence of forward-backward symmetry in the angular distributions of CD3 in higher rotational states suggests that osculating complexes create rotationally hotter CD3.