Silicon-29 and carbon-13 NMR studies of organosilicon chemistry. II—The Methylethoxysilanes MenSi(OEt)4−n
1975; Wiley; Volume: 7; Issue: 9 Linguagem: Inglês
10.1002/mrc.1270070913
ISSN0030-4921
AutoresRobin K. Harris, Barry J. Kimber,
Tópico(s)Silicone and Siloxane Chemistry
ResumoAbstract 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.
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