Title: dipolar coupling
Long Title: IUPAC Gold Book - dipolar coupling
DOI: 10.1351/goldbook.08330
Status: current

Definition
Direct though-space interactions of nuclear magnetic moment vectors proportional to the inverse cube of internuclear distance.

Note
In isotropic solution, dipolar couplings average to zero as a result of diffusion but are present in solid-state nuclear magnetic resonance spectroscopy and their effect on nuclear spin relaxation are measurable through nuclear Overhauser effects (NOEs).

Related Terms
- nuclear Overhauser effects: https://goldbook.iupac.org//terms/view/08385
- solid-state nuclear magnetic resonance spectroscopy: https://goldbook.iupac.org//terms/view/08415

Source
- PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 685 (https://doi.org/10.1515/pac-2019-0203)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/08330/html
- json: https://goldbook.iupac.org/terms/view/08330/json
- xml: https://goldbook.iupac.org/terms/view/08330/xml

Citation: Citation: 'dipolar coupling' 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.08330
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Accessed: 2026-07-25T14:49:44+00:00