Zusammenfassung
70 eV EI-Massenspektren von bisanellierten Thiophendionen, die als Modellsubstanzen für Oxidationsprodukte von Schwefelverbindungen in hochsiedenden Erdölfraktionen in Frage kommen, werden diskutiert. Bei den Modellsubstanzen handelt es sich um sieben bisanellierte Dicyclopenta[b,d]thiophendione. Anelliert sind das Benzo-(mit und ohne Methylsubstituenten), Naphtho- und Thieno-System. Die Spektren werden anhand der Neutralbruchstückabspaltung und der doppeltgeladenen Ionen interpretiert. Alle Thiophendione zeichnen sich durch hohe Molekülionenanteile und charakteristische Abspaltungen, insbesondere CO und CO + CS, aus.
Summary
To assist the investigation of oxidation products of sulphur compounds in high-boiling crude oil fractions, the mass spectra of several bisanellated thiophenediones were recorded with a mass spectrometer using 70 eV electron impact. The model substances were seven bisanellated dicyclopenta[b,d]thiophenediones, the benzo- (with and without methyl substituents), naphtho- and thieno-systems being anellated. Spectra were interpreted for both neutral fragmentation and double-charged ions. All thiophenediones yield a high proportion of molecular ions, and show characteristic fragmentation, especially the loss of CO and CO + CS.
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Dedicated to Prof. Dr. F. Boberg on the occasion of his 60th birthday
We would like to thank the Deutsche Forschungsgemeinschaft for their financial support of this project.
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Glinzer, O., Severin, D., Czogalla, CD. et al. Mass spectrometry of bisanellated thiophenediones as model substances for oxidation products of sulphur compounds in high-boiling crude oil fractions. Z. Anal. Chem. 315, 505–509 (1983). https://doi.org/10.1007/BF00493797
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DOI: https://doi.org/10.1007/BF00493797