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Metastable ion study of organosilicon compounds VI—triethoxymethylsilane and tetraethoxysilane

✍ Scribed by Eiichi Tabei; Shigeru Mori; Fumio Okada; Susumu Tajima; Kazuo Ogino; Hirotaka Tanabe; Seiji Tobita

Publisher
John Wiley and Sons
Year
1993
Tongue
English
Weight
455 KB
Volume
28
Category
Article
ISSN
1076-5174

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✦ Synopsis

The fragmentations of triethoxymethylsilane ((C,H,O),SiCH, (1)) and tetraethoxysilane ((C,H,O),Si (3)) induced by electron impact were investigated by mass-analysed ion kinetic energy (MIKE) spectrometry and a deuterium-labelling study. These molecular ions begin to fragment by the loss of methyl, ethyl and/or ethoxy radicals. Almost complete scrambling of methylene hydrogen takes place in these resultant intermediate ions, prior to the elimination of acetaldehyde molecule. The fragmentations of [ 11 +' and [ 31 +. were compared with those of the corresponding carbon analogues, l,l,l-trietboxyethane ((C,H,O),CCH, (2)) and tetraethoxymethane ((C,H,O),C (311, respectively.

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