Illustrated Glossary of Organic Chemistry

Nondecoupled: In NMR spectroscopy, nuclei which are not decoupled (i.e., they remain coupled).


Nondecoupled 1H-NMR spectrum of CH3CH2Br. The signals are split into a quartet for the CH2 protons and a triplet for the CH3 protons.


Decoupled 1H-NMR spectrum of CH3CH2Br. The signals are not split, and each is a singlet.