“…As the 29 Si chemical shift is affected by not only the nearestneighbor atoms but also the next-nearest-neighbor atoms in the presence of B atom as adjacent atoms of N atom, which may have caused the observed peak broadening. Moreover, the SiÁ/N bonds formed by dehydrocoupling between polyvinylsilane (PVS) containing Á/SiH 3 or polyphenylsilane (PPS) and PBN were observed by liquid phase 29 Si-NMR [26]. IR absorption of Si Á/N (870 cm (1 ) was difficult to be distinguished due to overlapping with CH 3 (867 cm (1 redistribution of SiÁ/Si and Si Á/H bonds.…”