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Silylenes of the Elemental Composition C4H2Si: Generation and Matrix-Spectroscopic Identification

✍ Scribed by Günther Maier; Hans Peter Reisenauer; Andreas Meudt

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
300 KB
Volume
1998
Category
Article
ISSN
1434-193X

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✦ Synopsis

Flash pyrolysis of 1,1-diethynyl-2,2,2-trimethyldisilane ( ) butadiynylsilylene ( ). The identification of these reactive intermediates is based on the comparison between the and triethynylsilane (18) led to the formation of two silylenes of the elemental composition C 4 H 2 Si, namely dieth-experimental and calculated IR spectra for the parent compounds as well as for their dideuterated and fully 13 C-ynylsilylene (10) and ethynylsilacyclopropenylidene (7), which were isolated in an argon matrix at 10 K. Both labeled isotopomers. compounds could be photoconverted into another isomer, Copyrolysis of triethynylsilane ( ) and dimethylbutadiene under comparable conditions also led to the products described above, but in lower yields. It is easier to extrude Key compound in the synthesis of 1,1-diethynyl-2,2,2-trimethyldisilane ( ) is the previously unknown 1,1,1-tri-trimethylsilane from 16 than acetylene from 18. Neverthe-

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