Virtual coupling effects in heteronuclear chemical-shift correlation spectroscopy
1990
The cross peaks in the 2D spectra normally arise due to the existence of a non vanishing heteronuclear scalar coupling. However, virtual coupling between 1 H and 13 C spins (3-7), arising due to strong coupling between two or more protons, can result in the appearance of spurious peaks in the HETCOR spectra
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