relaxation reagent

https://doi.org/10.1351/goldbook.08405
Paramagnetic species added to a sample in a nuclear magnetic resonance spectroscopy experiment to promote more rapid spin-lattice relaxation and allow a faster pulse repetition rate.
Example:
Tris(acetylacetonato)chromium(III) (chromium(III) acetyl acetonate, Cr(acac)3) is typically used.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 702 [Terms] [Paper]
Citation: 'relaxation reagent' 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.08405 RIS BibTex EndNote
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