Vibrational spectra, theoretical calculations, and structures for 1,3-disilacyclopent-4-ene and 1,3-disilacyclopentane and their tetrachloro derivatives

The infrared and Raman spectra and theoretical calculations for 1,3-disilacyclopent-4-ene and 1,3-disilacyclopentane and their tetrachloro derivatives are reported. The calculated structures for the molecules have been found and the silicon-carbon bond where the carbon atom is olefinic was found to be shortened relative to SiH2CH2 bonds. The agreement between observed and calculated spectra is very good.