Dissociative electron attachment and anion-induced dimerization in pyruvic acid.
Dissociative electron attachment and anion-induced dimerization in pyruvic acid.
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DOI：
10.1039/c7cp07472g
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发表时间：
2018-03
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通讯作者：
M. Zawadzki;M. Ranković;J. Kočišek;J. Fedor
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文献类型：
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作者：
M. Zawadzki;M. Ranković;J. Kočišek;J. Fedor
我们报告的部分截面的解离电子附着到异甘草酸。观察到丰富的碎裂动力学。电子结构计算有助于识别解离过程中发生的复杂重排反应。此外，观察到在接近0 eV的电子能量下产生的一些碎片阴离子，其不能源自单电子-分子碰撞。我们把它们的产生归因于瞬态阴离子与中性分子的二次反应。这样的反应被证明是异常有效的;最可能的原因是它们通过形成双氢键复合物，然后在反应伙伴之间进行超快质子转移来进行。
We report partial cross sections for the dissociative electron attachment to pyruvic acid. A rich fragmentation dynamics is observed. Electronic structure calculations facilitate the identification of complex rearrangement reactions that occur during the dissociation. Furthermore, a number of fragment anions produced at electron energies close to 0 eV are observed, that cannot originate from single electron-molecule collisions. We ascribe their production to secondary reactions of the transient anions with neutral molecules. Such reactions turn out to be unusually efficient; the most probable reason for this is that they proceed via the formation of a double-hydrogen-bonded complex followed by an ultrafast proton transfer between the reaction partners.