Title: heteronuclear decoupling
Long Title: IUPAC Gold Book - heteronuclear decoupling
DOI: 10.1351/goldbook.08351
Status: current

Definition
Spin decoupling in nuclear magnetic resonance spectroscopy between two different nuclei (e.g., \(\ce{^{13}C}\) and \(\ce{^{1}H}\)) by appropriate excitation of the decoupled nucleus.


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

Related Terms
- Spin decoupling: https://goldbook.iupac.org/terms/view/08419
- homonuclear decoupling: https://goldbook.iupac.org/terms/view/08365
- nuclear magnetic resonance spectroscopy: https://goldbook.iupac.org/terms/view/08218
- signal-to-noise ratio: https://goldbook.iupac.org/terms/view/08282

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 690 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08351/html
- json: https://goldbook.iupac.org/terms/view/08351/json
- xml: https://goldbook.iupac.org/terms/view/08351/xml

Citation: 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. 10.1351/goldbook.08351
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Accessed: 2026-06-29T23:04:55+00:00