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Studies in organic mass spectrometry. Part 9—mass spectra of 9,10-disubstituted 2,3,6,7-tetraalkoxy-9,10-dihydroanthracenes: A remarkable loss of radicals from even-electron ions

Authors :
Liliana Lamartina
Leopoldo Ceraulo
Maria Concetta Natoli
Mirella Ferrugia
Pasquale Agozzino
Source :
Organic Mass Spectrometry. 26:279-286
Publication Year :
1991
Publisher :
Wiley, 1991.

Abstract

The electron impact-induced fragmentations of 23 9,10-disubstituted 2,3,6,7-tetraalkoxy-9,10-dihydroanthracenes, including six stereoisomeric pairs, were studied. The loss of the 9-(or 10-)substituent constitutes the main fragmentation route. The resulting ions give rise to a remarkable violation of the so-called even-electron rule as they eject the second substituent at the 10-(or 9-)position as a radical. The latter aspect was particularly investigated with the aid of low-energy (nominal value 15 eV) and mass-analysed ion kinetic energy spectra

Details

ISSN :
10969888 and 0030493X
Volume :
26
Database :
OpenAIRE
Journal :
Organic Mass Spectrometry
Accession number :
edsair.doi...........1ba421ca92e2e8f9df9cb0b4b8745bf5
Full Text :
https://doi.org/10.1002/oms.1210260419