Mass-spectrometric study of benzopyridosilaazepines and -azepinones

The influence of various structural factors on the dissociative ionization of benzopyridosilaazepines and -azepinones has been investigated. It has been shown that the mass spectra can be used to identify isomeric benzopyridosilaazepinones with respect to the position of the amide fragment in the ce...

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Veröffentlicht in:	Chem. Heterocycl. Compd. (Engl. Transl.); (United States) 1986-05, Vol.22 (5), p.577-580
Hauptverfasser:	Shevtsov, V. K., Varlamov, A. V., Poshivalov, S. G., Simonova, L. A., Prostakov, N. S.
Format:	Artikel
Sprache:	eng ; rus
Schlagworte:	400201 - Chemical & Physicochemical Properties 640304 - Atomic, Molecular & Chemical Physics- Collision Phenomena ALCOHOLS AMIDES ATOMIC AND MOLECULAR PHYSICS AZINES BEAMS CHARGED PARTICLES CHEMICAL REACTIONS COLLISIONS COMPLEXES DEUTERATION DEUTERIUM COMPOUNDS DISSOCIATION ELECTRON BEAMS ELECTRON COLLISIONS ELECTRON-MOLECULE COLLISIONS HETEROCYCLIC COMPOUNDS HYDRIDES HYDROGEN COMPOUNDS HYDROGEN TRANSFER HYDROXY COMPOUNDS INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY IONIZATION IONS ISOTOPIC EXCHANGE KETONES LEPTON BEAMS MASS SPECTRA METHANOL MOLECULAR IONS MOLECULAR STRUCTURE MOLECULE COLLISIONS ORGANIC COMPOUNDS ORGANIC NITROGEN COMPOUNDS ORGANIC SILICON COMPOUNDS ORGANIC SOLVENTS PARTICLE BEAMS SILANES SILICON COMPLEXES SILICON COMPOUNDS SOLVENTS SPECTRA
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Zusammenfassung:	The influence of various structural factors on the dissociative ionization of benzopyridosilaazepines and -azepinones has been investigated. It has been shown that the mass spectra can be used to identify isomeric benzopyridosilaazepinones with respect to the position of the amide fragment in the central heterocycle. The anomalously high intensity of the ion (M - H) in the mass spectra of these compounds is attributed to fragmentation of the molecular ions from the open form.
ISSN:	0009-3122 1573-8353
DOI:	10.1007/BF00519544