Synthesis, characterization and properties of diamidodisilanes and azocyclosilane

Organosilicon compounds have been widely researched and have the maximum species besides hydrocarbons. In the progress of the research work, many scientists pay attention to the organic silicon compounds that have vari-ety reactive functional groups1,2]. The difunctional disi-lanes are very active; they could react with not only the compounds containing reactive hydrogen atoms, but also the reactive polymers. Therefore, the disilanes with di-functional groups could be used as disilane substit…

Synthesis, characterization and properties of diamidodisilanes and azocyclosilane

Several diamidodisilanes and azocyclosilane were prepared from the resultants of Wurtz coupling reaction between dichlorosilane and sodium and characterized by ^1H NMR and FT-IR. The two split peaks of the stretching vibration bonds of Si-H bonds in compounds 1 and 3 were firstly found at -2163 cm^-1 and -2100 cm^-1 respectively. The density functional theory was adopted to calculate the several stable geometrical isomerism structures of compounds 1 and 3. The results of the calculations show that the peak split of Si-H bonds stretching vibration absorption was caused by the different geometrical isomers of the compounds and the calculated IR spectra of compounds 1 and 3 are much closer to the experimental results. The processes of hydrolysis and polycondensation reactions of the synthetic compounds were studied by FT-IR. At the same time, the transition of Si-H bonds split peaks was observed in this procedure. As the results of the hydrolysis and condensation reactions, a new type of organic silicon polymer, polyoxydisilane was obtained, which presents the photoluminescence of the polysilanes.