甲基乙烯基酮构象的空间分离
Spatial Separation of the Conformers of Methyl Vinyl Ketone
摘要：
甲基乙烯基酮（C $_4$ H $_6$ O）是一种挥发性、不稳定的有机化合物，在大气化学中具有重要意义。制备了旋转温度为1.2（2）K的甲基乙烯基酮分子束，并利用静电偏转器对甲基乙烯基酮的\emph{s-cis}和\emph{s-trans}构象进行了空间分离。对于激光电离区中的直接光束，所得样品密度为$1.5(2)\times10^{8}~\text{cm}^{-3}$。这些符合者选择的甲基乙烯基酮样品非常适合符合者特定的化学反应性研究，如在狄尔斯-阿尔德环加成反应。
英文摘要：
Methyl vinyl ketone (C$_4$H$_6$O) is a volatile, labile organic compound of importance in atmospheric chemistry. We prepared a molecular beam of methyl vinyl ketone with a rotational temperature of 1.2(2)~K and demonstrated the spatial separation of the \emph{s-cis} and \emph{s-trans} conformers of methyl vinyl ketone using the electrostatic deflector. The resulting sample density was $1.5(2)\times10^{8}~\text{cm}^{-3}$ for the direct beam in the laser ionization region. These conformer-selected methyl vinyl ketone samples are well suited for conformer-specific chemical reactivity studies such as in Diels-Alder cycloaddition reactions.
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