Abstract: The 1-hydrocarbyl-1-Silacyclobutanes. HRSiCH₂CH₂CH₂(R=H, Me, Et, i-Pr, Cyclo-hexyl, CH₂Ph, Ph, p-MeC₆H₄, p-ClC₆H₄, w-MeC₆H₄m-ClCH₄, Mesityl) were synthesized by the reaction of 1, 1-dichloro-1-silacyclobutane with LiAlH.,. The structure of 9 new compounds were characterized by ¹HNMR, 1R and MS. The relationship between the Si-Hstretching vibration and the electronic and steric effects of substituents on the atom Si was discussed.

Key words: 1-hydrocarbyl-l-silacyclobutane. Synthesis, Si-H bond, Stretching vibration frequency, Monadic linear regression analysis