Studies of silyl and germyl Group VI species. Part VII. The substituent effects of the vinyl group in 1,3-divinyltetramethyldisilyl chalcogenides

Abstract

Symmetrically substituted 1,3-divinyltetramethyldisilyl chalcogenides (CH2=CHSiMe2)2E, where E = O, S, Se, and Te have been prepared and characterized by their ir, Raman, 1H and 13C nmr spectra. Reactions of the sulfide and selenide with anhydrous H2S and H2Se, respectively, are discussed.

Hydrolysis and condensation of a benzocyclobutene-functionalized precursor for the synthesis of high performance low-K polymers

“…The band at 1593 cm À1 is due to the C]C stretching vibration of the vinyl group. 20 Furthermore, the band at 1464 cm À1 is due to the in-plane deformation vibration of the C-H of the methylene in the strained four-membered ring of BCB, and the bands at 1404 cm À1 and 1256 cm À1 are due to the d as (C-H) and d s (C-H) of Si-CH 3 , respectively. The strong band at 1051 cm À1 is assigned to the Si-O-Si stretching vibration.…”