Silicon‐29 and carbon‐13 NMR studies of organosilicon chemistry. II—The Methylethoxysilanes Me_<i>n</i>Si(OEt)_4−<i>n</i>

Abstract

Abstract Silicon‐29, carbon‐13 and oxygen‐17 NMR data are reported for the methylethoxysilanes, Me n Si(OEt) 4− n with n = C to 3. The values of 1 J (SiC) vary greatly, in a manner which appears to be inconsistent with an effect of s ‐character variation alone. The chemical shifts are discussed in terms of possible π‐bonding. Silicon‐29 and carbon‐13 spin‐lattice relaxation times and nuclear Overhauser effects are also reported and discussed.