Silicon‐29 and carbon‐13 NMR studies of organosilicon chemistry. II—The Methylethoxysilanes MenSi(OEt)4−n

Silicon‐29, carbon‐13 and oxygen‐17 NMR data are reported for the methylethoxysilanes, MenSi(OEt)4−n with n = C to 3. The values of 1J(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.