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In order to study the structure dependence of the  13 C,H couplings in the fulvene system the  1 H-coupled  13 C NMR spectra of 6,6-disubstituted fulvenes (R = R′ = C 6 H 5 , CH 3 , cyclopropyl and N(CH 3 ) 2 ) were recorded and the interesting couplings determined with high accuracy by complete analysis. They have values typical for unsaturated five membered rings with vastly localised double bonds like cyclopentadiene-1,3 and spiro[2.4]heptadiene- 4,6 and show characteristic correlations with structure parameters.

zeitschrift für naturforschung b

Hochauflösungs- 13 C-NMR-Spektroskopie, VI [1]. Strukturabhängigkeit der  13 C,H-Kopplungskonstanten in 6.6-disubstituierten Fulvenen / High Resolution  13 C NMR Spectroscopy, VI [1]. Structure Dependence of the  13 C,H Coupling Constants in 6,6-Disubstituted Fulvenes