Abstract
The structure of chlorinated polyvinyltrimethylsilane (CPVTMS) has been investigated by 1H and 13C NMR analysis. The NMR spectra of CPVTMS specimens were interpreted on the basis of the NMR spectra of model compounds, viz. chlorine derivatives of tetramethyl silane, and also in the light of calculations. It was found that chlorination covers only side groups of the polymer even when 2 Cl atoms per chain unit are introduced. On the basis of the data obtained it is concluded that very pronounced steric effects must be involved in the chlorination. Chemical shifts in the 13C NMR spectra have been tabulated for the chlorinated PVTMS and model compounds. Contents of six possible structures of chlorinated side groups have been calculated for chlorinated PVTMS with differing contents of Cl.
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