Do Xylylenes Isomerize in Pyrolysis? |
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| Authors: | Florian Hirsch Dr Kai Pachner Prof Ingo Fischer Kevin Issler Dr Jens Petersen Prof Roland Mitric Sjors Bakels Prof Anouk M Rijs |
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| Institution: | 1. Institute for Physical and Theoretical Chemistry, University of Würzburg, Am Hubland, 97074 Würzburg, Germany;2. Radboud University, Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7, 6525 ED Nijmegen, The, Netherlands |
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| Abstract: | 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. |
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| Keywords: | biradicals high-temperature chemistry IR spectroscopy pyrolysis xylylene |
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