ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
This paper reports the mass spectrum of vinyltrimethylsilane over the range of electron-impact energy of 9 to 70 eV as determined with a quadrupole mass spectrometer. Less extensive data obtained with magnetic spectrometers are included for comparison as well as the spectrum of vinyl-tri(methyl-d3)silane. Plots of ion intensity as a function of electron energy, nominal appearance potentials and metastable ion transitions are given.The primary ionization results in an electron deficiency on the silicon atom, followed by loss of either ·CH3, C2H4 or ·C2H3 to give fragments of mass 85, 73 or 72, respectively. The primary fragment of mass 85 loses C2H2 to give the mass 59 ion. The primary fragment of mass 73 loses successively C2H4 and H2 to give first the mass 45 ion and then the mass 43 ion. At 15 eV, the relative intensities of the ions are 85 〉 72 〉 100 〉 59 〉 73. At 70 eV, the relative intensities are 59 〉 85 〉 43 〉 45 〉 73 〉 72 〉 100.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210070907
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