Determination of bond energies of organic silicon compounds on the basis of appearance potentials

J. Borossay, Béla Csárvári, László Szepes

Research output: Contribution to journalArticle

Abstract

For the kinetic treatment of the rearrangement reactions of siloxanes it was necessary to study the relative bond dissociation energies of the various silicon-oxygen bonds present in the siloxane chain. Therefore, appearance potentials of the trimethyl-silyl-and trimethyl-siloxy-ions formed in the course of fragmentation were determined by means of the electron impact method, and bond dissociation energies of the corresponding bonds were evaluated. A 20% increase in the bond dissociation energy was found for the silicon-oxygen bond adjacent to the vinyl-group in vinyl-substituted siloxanes. On the basis of this finding a differential equation was established which correctly describes the rearrangement reaction of heptamethyl-3-vinyl-trisiloxane.

Original languageEnglish
Pages (from-to)47-54
Number of pages8
JournalInternational Journal of Mass Spectrometry and Ion Physics
Volume7
Issue number1
DOIs
Publication statusPublished - 1971

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organic silicon compounds
Silicon Compounds
Silicon compounds
Siloxanes
siloxanes
Silicon
dissociation
Oxygen
silicon
oxygen
electron impact
energy
fragmentation
Differential equations
differential equations
Ions
Kinetics
Electrons
kinetics
ions

Cite this

Determination of bond energies of organic silicon compounds on the basis of appearance potentials. / Borossay, J.; Csárvári, Béla; Szepes, László.

In: International Journal of Mass Spectrometry and Ion Physics, Vol. 7, No. 1, 1971, p. 47-54.

Research output: Contribution to journalArticle

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