Dynamics of H and D abstraction in the reaction of Cl atom with butane-1,1,1,4,4,4-d6.

Dynamics of H and D abstraction in the reaction of Cl atom with butane-1,1,1,4,4,4-d6.
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Cl原子与1,1,1,4,4,4-d6反应中H和D抽象的动力学。

DOI:
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发表时间:
2011
期刊:
Physical Chemistry, Chemical Physics - PCCP
影响因子:
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通讯作者:
A. Suits
A. Suits
中科院分区:
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文献类型:
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作者:
Armando D. Estillore;Laura M Visger;Tarek Abdul Ghani;A. Suits

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本文报道了氯原子与丁烷-1,1,1,4,4,4-d(6)反应的一级(D原子)和二级(H原子)抽提动力学。采用交叉分子束直流切片离子成像技术,在碰撞能量范围内分别研究了H-和D-原子提取通道:10.4 kcal mol(-1)和12.9 kcal mol(-1); 5.2 kcal mol(-1)至12.8 kcal mol(-1)。在157 nm处的单光子电离用于探测由H-和D-原子提取反应产生的丁基自由基产物。这两个通道表现出不同的动力学主要在平移能量分布,而角分布是非常相似的。减少平移能量分布的初级抽象表现出显着的变化与碰撞能量在向后的方向,而二次抽象表现出这种变化在向前的方向。
We report the primary (D-atom) and secondary (H-atom) abstraction dynamics of chlorine atom reaction with butane-1,1,1,4,4,4-d(6). The H- and D-atom abstraction channels were studied over a range of collision energies: 10.4 kcal mol(-1) and 12.9 kcal mol(-1); 5.2 kcal mol(-1) to 12.8 kcal mol(-1), respectively, using crossed molecular beam dc slice ion imaging techniques. Single photon ionization at 157 nm was used to probe the butyl radical products resulting from the H- and D-atom abstraction reactions. These two channels manifest distinct dynamics principally in the translational energy distributions, while the angular distributions are remarkably similar. The reduced translational energy distribution for the primary abstraction showed marked variation with collision energy in the backward direction, while the secondary abstraction showed this variation in the forward direction.