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- W1963849105 abstract "The metastable decompositions of trimethylsilylmethanol, (CH3)3SiCH2OH (MW: 104, 1) and methoxytrimethylsilane, (CH3)3SiOCH3 (MW: 104, 2) upon electron ionization have been investigated by use of mass-analyzed ion kinetic energy (MIKE) spectroscopy and D labeling. The metastable ions of 1·+ decompose to give the fragment ions m/z 89 (CH3· loss) and 73 (·CH2OH loss), whereas those of 2·+ only yield the fragment ion m/z 89 (CH3· loss). The latter fragment ion is generated by loss of a methyl radical from the trimethylsilyl group via a simple cleavage reaction as shown by D labeling. However, the fragment ions m/z 89 and 73 from 1·+ are generated following an almost statistical exchange of the original methyl and methylene hydrogen atoms in the molecular ion as shown also by D labeling. This exchange indicates a complex rearrangement of the molecular ion of 1·+ prior to metastable decomposition for which as key step a 1,2-trimethylsilyl group migration from carbon to oxygen is suggested. A different behavior is also found between the source-generated m/z 89 ions from 1·+ which decompose in the metastable time region to give ions m/z 61 by loss of ethylene and those from 2·+ which decompose in the metastable region to yield ions m/z 59 by elimination of formaldehyde." @default.
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- W1963849105 title "Electron ionization induced metastable decompositions of isomeric trimethylsilylmethanol, (CH<sub>3</sub>)<sub>3</sub>SiCH<sub>2</sub>OH, and methoxytrimethylsilane, (CH<sub>3</sub>)<sub>3</sub>SiOCH<sub>3</sub>" @default.
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- W1963849105 doi "https://doi.org/10.1016/s1044-0305(98)00075-0" @default.
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