Revised patterns of reactivity scheme. VII. Revised patterns scheme and its relationship to carbon-13 NMR spectra

The electron density on a carbon atom determines the C-13 chemical shift; o bserved in the NMR spectrum. In a vinyl monomer, the same electron density must contribute strongly to polar effects involved in the addition of a rad ical to that monomer and possibly in the addition (to a double bond) of a r adical terminated by a unit derived from that monomer. It is shown that the expected correlation exists when the polar effects in polymerization react ions are represented by the parameters of the revised patterns scheme. (C) 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 4336-4342, 2000.