Reactivity and molecular optical properties of alkenylsilanes

Summary

• 1. It was established that there is a parallelism between the rates of thiocyanogen addition and intensity of Raman lines for a large number of alkenylsilanes of various structures.

• 2. It was found that, allylulanes and alkenylsilanes having a tertiary double bond are characterized by particularly high double-bond activity in addition reactions, by high-intensity Raman lines and infrared absorption bands, and by exaltation of molecular refraction. It was suggested that these peculiarities of the above classes of alkenylsilanes are to be attributed to ?, ?-conjugation.

• 3. It was shown that the altcreation in the intensities of the double-bond lines of the Raman spectrum and absorption bands of the infrared spectra extends to the σ-and c-double positions, and the alternation in the rates of thiocyanogen addition extends to the ?-double-bond position.