Hyperconjugative stabilization of silicenium ions: Kinetics of hydride abstractions from β-element substituted silanes

Article abstract of DOI:10.1021/ja00067a018

Rates of hydride abstractions from β-silyl-, β-germyl-, and β-stannyl-substituted silanes [HSiMe₂(CH₂-MMe₃), M = Si, Ge, Sn] and related compounds by diarylcarbenium ions have been measured. The intermediate silicenium ions, produced in the rate-determining step, are stabilized by hyperconjugation, but the effects are much smaller than in comparable carbenium ions.