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Electron impact mass spectrometry of [C7H8N]+ and [C6H7]+ and [C6H7]+ fragment ions produced from o-toluidine and N-methylaniline

✍ Scribed by Ezzat T. M. Selim; M. A. Rabbih; M. A. Fahmey

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 523 KB
Volume: 27
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210270814

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✦ Synopsis

Abstract

An energetic study of the production of [C~7~H~8~N]^+^ and [C~6~H~7~]^+^ fragment ions from o‐toluidine and N‐methylaniline is reported. The mechanisms for the formation of the ions are suggested. Metastable peaks associated with the formation and fragmentation of reactive [C~7~H~8~N]^+^ and [C~6~H~7~]^+^ ions were detected and kinetic energy released were determined. The results indicate that the [C~7~H~8~N]^+^ ion is formed at threshold from o‐toluidine with an aminotropylium structure whereas for N‐methylaniline the ion is formed with an__N__‐phenylmethaniminium structure. [C~6~H~7~]^+^ ions are believed to be formed at threshold from the two precursors with a protonated benzene structure.

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