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Pyrolysis gas chromatography/mass spectrometry of polyvinylsilanes. Mass spectrometric characteristics of alkanes and alkenes containing two or more triorganosilyl substituents
Author(s) -
Zaikin V. G.,
Filippova V. G.,
Semenov O. B.
Publication year - 1991
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210260908
Subject(s) - chemistry , silylation , trimethylsilyl , alkene , pyrolysis , alkyl , mass spectrometry , electron ionization , pyrolysis–gas chromatography–mass spectrometry , fragmentation (computing) , gas chromatography , alkane , organic chemistry , hydrocarbon , mass spectrum , polyatomic ion , ion , chromatography , catalysis , ionization , operating system , computer science
Pyrolysis gas chromatography/mass Spectrometry was applied to the investigation of homopolymers obtained from trimethyl‐, n ‐pentyldimethyl‐, n ‐octyldimethyl‐ and trideuteromethyldimethyl‐vinylsilanes. The electron impact‐induced fragmentation of alkanes, alkenes and alkadienes containing two or more corresponding silyl substituents and resulting from pyrolysis of polymers was elucidated. The most characteristic fragmentation patterns of trimethylsilyl‐substituted compounds are due to the loss of HSi(CH 3 ) 3 and Si(CH 3 ) 4 from M +˙ , the order of which depends on the presence or absence of a double bond in hydrocarbon chain. The same structural parameter determines the probability of the characteristic decomposition of n ‐alkyldimethylsilyl‐substituted compounds through the loss of alkene and alkyl groups from the molecular ions.