kinetic coupling 

https://doi.org/10.1351/goldbook.08629
Coupling of vibrational displacements through terms in the vibrational kinetic energy.
Note:
Two displacement coordinates must share a common atom if they are to undergo kinetic coupling.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 752 [Terms] [Paper]
Citation: 'kinetic coupling' 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.08629 RIS BibTex EndNote
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