Time-resolved unimolecular fragmentations of C3H7O+ ions.

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概要

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• The unimolecular dissociations of the C<SUB>3</SUB>H<SUB>7</SUB>O<SUP>+</SUP> ions produced by the dissociative ionization of <I>t</I>-butyl and <I>s</I>-butyl alcohols have been studied by means of trapped ion mass spectrometry(TIMS). The metastable peak intensities for two competing formations of C<SUB>3</SUB>H<SUB>5</SUB><SUP>+</SUP> and CH<SUB>3</SUB>O<SUP>+</SUP> have been measured for the ion lifetimes of 0–50 μs. Also, the shifts of the electron-ionization-efficiency(EIE) curves for these ions have been observed between the ion-storage times of 2 and 800 μs. These data have then been fitted by means of QET model calculations. The dissociation paths of C<SUB>3</SUB>H<SUB>7</SUB>O<SUP>+</SUP> can be interpreted without any assumption of a ratedetermining isomerization process.

• 公益社団法人 日本化学会の論文

著者

• Arakawa Ryuichi

  Institute of Chemistry, College of General Education, Osaka University

• Yoshikawa Yozaburo

  Institute of Chemistry, College of General Education, Osaka University

関連論文

• Molecular-weight Determination by the Vapor-pressure-Depression Method using Gas Chromatography
• Time-resolved unimolecular fragmentations of C3H7O+ ions.
• VUV Photoionization Efficiency Curves and Appearance Energies of N,N-Dimethylformamide Ion and Its Fragment Ions.

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