²⁹Si nuclear magnetic resonance of dimethyl and phenylmethyl containing polysilanes

Abstract

Abstract The 29 Si‐NMR spectra are reported for poly(methylphenylsilylene), 1 , poly(1,1,2‐trimethyl‐2‐phenyldisilene) 2 , two samples of poly(dimethylsilylene‐co‐phenylmethylsilylene), 3a and 3b , and poly(phenylmethylsilylene‐co‐ n ‐hexylmethylsilylene), 4 . The spectra of 3a , 3b , and 4 indicate that these polymers contain blocklike regions with considerable segregation of RMeSi and PhMeSi groups. The spectrum of 2 shows no evidence for stereospecific polymerization. The preparation of 2 from 1,1,2‐trimethyl‐2‐phenyldichlorosilane is also described.