Kinetic coupling

{
  "id": "MLC-T-CHM-006349",
  "term": "Kinetic coupling",
  "field": "Chemistry",
  "definition": "The interaction between different vibrational modes in a molecule that arises from the kinetic energy terms in the Hamiltonian, rather than from potential energy terms. This coupling occurs when the motion of one atom affects the kinetic energy of another, leading to mixed vibrational states. It is particularly relevant in molecules with light atoms or large amplitude motions.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "vibrational kinetic energy"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 752 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/kinetic-coupling/"
}