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Formation of Dimers During Electron Capture Mass Spectrometry of Substituted Hydroquinones

✍ Scribed by V. A. Boote; J. M. Bruce; S. A. Clarke; A. P. Pritchard; R. J. Speak

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
55 KB
Volume
11
Category
Article
ISSN
0951-4198

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✦ Synopsis

Negative ion electron capture mass spectrometry, using carbon dioxide-buffered thermal electrons, of formyl-, acetyl-and benzyol-hydroquinones is shown to lead to the formation of the corresponding hydroquinone dimers, often to a significant extent; the dimer predominates for nitrohydroquinone. Mixed dimers can be formed from pairs of different substrates. For some of the hydroquinones, a major peak in the spectrum suggests that oxidation to the corresponding quinone occurs competitively. Tentative explanations of these phenomena are presented.

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