Abstract
AbstractThe 1H NMR chemical shift difference of the CH2 protons of meso and racemic dyads in poly(vinyl chloride) was measured as a function of temperature and was found to decrease linearly with increasing temperature. On the other hand, the temperature dependence of the chemical shift difference was calculated by taking into account the statistical weights of the preferred conformations of any specified stereochemical configuration. The experimental behavior could be verified by this calculation by considering the four‐bond interaction.
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