Knight shift symbol: K

https://doi.org/10.1351/goldbook.08374
Frequency shift in the nuclear magnetic resonance spectrum of a paramagnetic species that refers to the relative shift K in NMR frequency for atoms in a metal (e.g., sodium) compared with the same atoms in a nonmetallic environment (e.g., as a salt).
Note:
The observed shift reflects the local magnetic field produced at the metal nucleus by the magnetization of the conduction electrons.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 695 [Terms] [Paper]
Citation: 'Knight shift' 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.08374 RIS BibTex EndNote
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