Title: pure shift yielded by chirp excitation
Long Title: IUPAC Gold Book - pure shift yielded by chirp excitation
DOI: 10.1351/goldbook.08398
Status: current

Definition
Nuclear magnetic resonance spectroscopy experiment generating homonuclear spin-spin decoupled spectra.

Note
The effect is achieved through the concatenation of partial free induction decays generated with a series of swept adiabatic pulses.

Example
\(\ce{^{1}H}\) spectrum with no \(\ce{^{1}H},\ce{^{1}H}\) coupling.

Related Terms
- Nuclear magnetic resonance spectroscopy: https://goldbook.iupac.org//terms/view/08218
- free induction decays: https://goldbook.iupac.org//terms/view/08249
- spectrum: https://goldbook.iupac.org//terms/view/08384

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 701 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08398/html
- json: https://goldbook.iupac.org/terms/view/08398/json
- xml: https://goldbook.iupac.org/terms/view/08398/xml

Citation: Citation: 'pure shift yielded by chirp excitation' 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.08398
License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms.
Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org .
Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.
Accessed: 2026-04-17T21:29:12+00:00