Analysis of ‘virtual one-bond coupling’ effects in heteronuclear chemical shift correlation 2D N.M.R. spectra

Abstract
Analytical and numerical calculations of the effects of ‘one-bond virtual couplings’ on heteronuclear proton-carbon-13 chemical shift correlation two-dimensional N.M.R. spectra are presented. Experimental results in good agreement with theory are reported for the two heteronuclear ABX spin systems of 2,3-dibromothiophene and the two ABCX systems of methyl acrylate.