1H NMR study of some substituted acyclic silaethanes, 2-silapropanes and 2-methyl-2-silapropanes and their rotameric populations around the SiC bond
作者:Robert Carleer、Marc J. O. Anteunis
DOI:10.1002/mrc.1270130406
日期:1980.4
AbstractThree series of substituted silaalkanes, (i) SiH3CH2X, (ii) MeSiH2CH2X and (III) Me2SiHCH2X, have been prepared (X=Cl, Br, I, NMe2, OMe, SMe), and the shifts and coupling constants extracted from their1H NMR spectra. Coefficients averaged over three rotameric states can be obtained from the first series which are used for the correction of coupling constants resulting from the presence of the electronegative substituents X. With the aid of the Karplus‐Conroy angular dependence of the interproton coupling constants in silaethane† fragments, corrected for electronegative substitution, approximate rotameric populations in series ii and iii were obtained. Except for X=NMe2, there is always a preference for asynclinalX/CH3relationship, even for sandwiched situations (series III).
Moore, Darren L.; Taylor, Mark P.; Timms, Peter L., Journal of the Chemical Society, Dalton Transactions, 2000, # 16, p. 2673 - 2678
作者:Moore, Darren L.、Taylor, Mark P.、Timms, Peter L.
DOI:——
日期:——
Synthesis and Structures of Simple (Silylmethyl)(methyl)ethers
作者:Norbert W. Mitzel
DOI:10.1515/znb-2003-0807
日期:2003.8.1
The compound Cl3SiCH2OCH3 was prepared by reacting ClCH2OCH3 with the Cl3SiH/NEt3 reagent. H3SiCH2OCH3 and F3SiCH2OCH3 were synthesized from Cl3SiCH2OCH3 by reduction with LiAlH4 and by fluorination with SbF3, respectively. The crystal structures of the low-melting compounds H3SiCH2OCH3 and F3SiCH2OCH3 were determined by X-ray diffraction of in situ grown crystals. Both compounds do not show any observable