The detailed structure of poly(dimethylsilylene) was analyzed by Si-29 and 13C CP/MAS NMR spectra and theoretical calculations. The end groups were assigned to methoxy and hydroxy groups. This assignment was also supported by the NMR measurement of model compounds. Branched structures are not present. A trace amount of siloxane bonds is contained. The degree of polymerization was estimated to be ca. 580750 by the Si-29 CP/MAS NMR spectra.
Molecular and crystal structure of 1,6-dihydroxydodecamethylhexasilane
作者:Alexander A. Korlyukov、Nina A. Chernyavskaya、Mikhail Yu. Antipin、Alexey I. Chernyavskii
DOI:10.1070/mc2002v012n06abeh001670
日期:2002.1
As found using X-ray diffraction data, the molecules of 1,6-dihydroxydodecamethylhexasilane in a crystal have the all-trans conformation of the six-atomic chain and the trans orientation of hydroxyl groups.