Electron‐impact fragmentation of pentafluorophenyl‐ and pentafluorophenylalkyldimethylsilanes
Author(s) -
Poole C. F.,
Morgan E. D.,
Pacey N.
Publication year - 1975
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.1210101217
Subject(s) - fragmentation (computing) , mass spectrum , ion , electron ionization , spectral line , fluorine , chemistry , charge exchange , silicon , electron , cleavage (geology) , mass spectrometry , analytical chemistry (journal) , atomic physics , materials science , physics , ionization , environmental chemistry , organic chemistry , nuclear physics , chromatography , astronomy , fracture (geology) , computer science , composite material , operating system
Abstract The mass spectra of pentafluorobenzyl‐ and pentafluorophenylethylsilanes show cleavage to give cyclic fluorohydrocarbon ions of the tropylium type, which, with their fragmentation products, are the principal charge carrying species. In pentafluorophenyldimethylsilanes, exchange of fluorine and methyl between silicon and carbon occurs readily, and again the spectrum is dominated by cyclic fluorohydrocarbon ions. The composition and relative intensities of characteristic ions of diagnostic value in the spectra of pentafluorophenyldimethylsilanes are listed.