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Growth Of Doubly Ionized C,H,N Compounds in the Presence of Methane

机译:甲烷存在下双电离C,H,N化合物的生长

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摘要

The molecular dications C6H5N2+ generated via dissociative double ionization of 2- and 4-picoline, respectively, react with methane to form the C-C coupled products C7H7N2+ concomitant with liberation of molecular hydrogen. Multipole-based mass spectrometric experiments and photoionization studies using synchrotron radiation demonstrate that this bond-forming reaction involves the corresponding dications in their electronic ground states. The reactions might hence be of relevance in the context of the growth of hydrocarbon species at extremely low temperatures and pressures, such as in the atmosphere of Titan. Whereas the parent [(CH3)C5H4N]2+ dications of both picolines also show C-C coupling to a limited amount, the molecular dication of aniline, [C6H5NH2]2+, is almost unreactive toward methane.
机译:分别通过2-和4-甲基吡啶的解离双电离生成的分子指示C6H5N2 +与甲烷反应形成C-C偶联产物C7H7N2 +,同时释放出分子氢。基于多极的质谱实验和使用同步加速器辐射的光电离研究表明,这种键形成反应涉及其电子基态中的相应指示。因此,在烃类在极低的温度和压力下(例如在泰坦大气中)生长的情况下,这些反应可能具有相关性。两种甲基吡啶的母体[(CH3)C5H4N] 2+指示剂也显示出一定程度的C-C偶联,而苯胺[C6H5NH2] 2+的分子指示剂几乎对甲烷没有反应性。

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