Chemical Sciences: A Manual for CSIR-UGC National Eligibility
Test for Lectureship and JRF/Nuclear magnetic resonance
decoupling  From Wikibooks, open books for an open world Jump
to: navigation, search  Nuclear magnetic resonance decoupling
(NMR decoupling for short) is a special method used in nuclear
magnetic resonance (NMR) spectroscopy where a sample to be
analyzed is irradiated at a certain frequency or frequency range
to eliminate fully or partially the effect of coupling between
certain nuclei. NMR coupling refers to the effect of nuclei on
each other in atoms within a couple of bonds distance of each
other in molecules. This effect causes NMR signals in a spectrum
to be split into multiple peaks which are up to several hertz
frequency from each other. Decoupling fully or partially
eliminates splitting of the signal between the nuclei irradiated
and other nuclei such as the nuclei being analyzed in a certain
spectrum. NMR spectroscopy and sometimes decoupling can help
determine structures of chemical