Illustrated Glossary of Organic Chemistry

Broadband decoupling: An NMR spectroscopy technique wherein all spin-spin coupling is suppressed (decoupled), resulting in all signals appearing as singlets.

The simulated broadband decoupled ¹³C-NMR spectrum of CH₃CH₂CH₂CH₂OH. Without decoupling, the CH₂ groups give rise to triplets, and the CH₃ gives a quartet.