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Silicon-29 and carbon-13 n.m.r. studies of organosilicon chemistry. VII—trimethylsilylated silicates

✍ Scribed by R. K. Harris; R. H. Newman

Publisher
John Wiley and Sons
Year
1977
Tongue
English
Weight
578 KB
Volume
9
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Silicon‐29 n.m.r. was used to study the products from trimethylsilylation of minerals. Chemical shifts are reported for four model compounds, viz. the monomer, dimer, linear trimer (from natrolite) and cyclic tetramer (from laumontite). Information is then obtained from the products of trimethylsilylation of the anhydrous calcium silicates wollastonite and pseudo‐wollastonite. In the latter case it is shown that the principal products are the four model compounds, and percentage yields are obtained for these.

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Silicon-29 and carbon-13 NMR studies of organosilicon chemistry. II—The Methylethoxysilanes MenSi(OEt)4−n
✍ Robin K. Harris; Barry J. Kimber 📂 Article 📅 1975 🏛 John Wiley and Sons 🌐 English ⚖ 555 KB

## 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 sh