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

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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.