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Do Xylylenes Isomerize in Pyrolysis?
ChemPhysChem ( IF 2.3 ) Pub Date : 2020-06-23 , DOI: 10.1002/cphc.202000317
Florian Hirsch 1 , Kai Pachner 1 , Ingo Fischer 1 , Kevin Issler 1 , Jens Petersen 1 , Roland Mitric 1 , Sjors Bakels 2 , Anouk M Rijs 2
Affiliation  

We report infrared spectra of xylylene isomers in the gas phase, using free electron laser (FEL) radiation. All xylylenes were generated by flash pyrolysis. The IR spectra were obtained by monitoring the ion dip signal, using a IR/UV double resonance scheme. A gas phase IR spectrum of para‐xylylene was recorded, whereas ortho‐ and meta‐xylylene were found to partially rearrange to benzocyclobutene and styrene. Computations of the UV oscillator strength for all molecules were carried out and provde an explanation for the observation of the isomerization products.

中文翻译:

二甲苯在热解过程中会异构吗?

我们使用自由电子激光(FEL)辐射报告气相中二甲苯异构体的红外光谱。所有的二甲苯都是通过快速热解产生的。通过使用IR / UV双共振方案监测离子浸入信号获得IR光谱。记录了对二甲苯的气相红外光谱,而邻和间二甲苯被发现部分重排为苯并环丁烯和苯乙烯。进行了所有分子的紫外振荡强度的计算,并为观察异构化产物提供了解释。
更新日期:2020-06-23
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