Abstract
We report the time-resolved observation of the infrared laser induced dissociation of C2H4SO, (CH3)2SO and (CD3)2SO after IR-multiphoton excitation of the SO chromophore at waven bers around 1080 cm−1. The CO2 laser pulse lengths and time resolution of the detection scheme are both between 1 and 5 ns, also longer for some experiments. The collisionless IR-photochemical main primary products have been shown to be SO(3∑−) in all molecules together with C2H4 for C2H4SO and CH3 for (CH3)2SO. For C2H4SO unimolecular decay constants of k ≅ 107 to 108 s−1 after excitation above threshold are obtained. The dissociation process of (CH3)2SO can be described by a two-step mechanism with the intermediate CH3SO.
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© 1994 Springer-Verlag Berlin Heidelberg
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Groß, H., He, Y., Quack, M., Seyfang, G. (1994). Vibrational IR-Multiphoton Excitation of Small Sulfoxides: Time-Resolved IR-Spectroscopic Detection of Dissociation Products. In: Lau, A., Werncke, W., Siebert, F. (eds) Time-Resolved Vibrational Spectroscopy VI. Springer Proceedings in Physics, vol 74. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-85060-8_40
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DOI: https://doi.org/10.1007/978-3-642-85060-8_40
Publisher Name: Springer, Berlin, Heidelberg
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