Identification of Isomers of Nitrotoluene via Free Electron Attachment

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• 作者：Philipp Sulzer ; Andreas Mauracher ; Stephan Denifl ; Fabio Zappa ; Sylwia Ptasinska ; Manuel Beikircher ; Arntraud Bacher ; Nina Wendt ; Abid Aleem ; Flaminia Rondino ; Stefan Matejcik ; Michael Probst ; Tilmann
• 刊名：Analytical Chemistry
• 出版年：2007
• 出版时间：September 1, 2007
• 年：2007
• 卷：79
• 期：17
• 页码：Sulzer, Andreas Maur
• 全文大小：328K
• 年卷期：v.79,no.17(September 1, 2007)
• ISSN：1520-6882

文摘

Free electron attachment to the three different isomersof mononitrotoluene molecules in the gas phase is studiedusing a crossed electron-molecule beams technique. Incontrast to previous studies for a large number of negativeions, the presently measured relative cross section curvesare recorded with an electron energy resolution of betterthan 100 meV. For several product anions including thenitro anion NO₂^-, remarkable differences for the threeisomers are observed. In almost all fragment anionefficiency curves, the 2-nitrotoluene exhibits pronounceddifferences from the two other isomers. In contrast, 3- and4-nitrotoluene disagree only slightly in a few fragmentanions from each other.