IUPAC - heteronuclear decoupling (08351)

heteronuclear decoupling

Synonym: decoupling

https://doi.org/10.1351/goldbook.08351

Spin decoupling in nuclear magnetic resonance spectroscopy between two different nuclei (e.g.,

_{}^{}_{}^{13} C

and

_{}^{}_{}^{1} H

) by appropriate excitation of the decoupled nucleus.

Notes:

Heteronuclear decoupling is normally performed to simplify spectra or to enhance signal-to-noise ratio by combining individual components of the NMR signal.
Notation: $_{}^{}_{}^{13} C {_{}^{}_{}^{1} H}$ denotes observation of $_{}^{}_{}^{13} C$ nucleus with simultaneous decoupling of $_{}^{}_{}^{1} H$ nuclei.

See also: homonuclear decoupling

Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 690 [Terms] [Paper]

Citation: 'heteronuclear decoupling' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08351 RIS BibTex EndNote

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heteronuclear decoupling