Electrical anharmonicity

{
  "id": "MLC-T-CHM-003641",
  "term": "Electrical anharmonicity",
  "field": "Chemistry",
  "definition": "The deviation of the dipole moment of a molecule from a linear dependence on its normal coordinates. This property influences the intensity of vibrational transitions observed in infrared and Raman spectroscopy. It is a measure of how the electrical properties of a molecule change non-linearly with atomic displacements.",
  "synonyms": [
    "anharmonicity"
  ],
  "subject": "Analytical Chemistry",
  "see_also": [
    "electrical harmonicity",
    "mechanical anharmonicity",
    "normal coordinate"
  ],
  "references": [
    "PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 744 (https://doi.org/10.1515/pac-2019-0203)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/electrical-anharmonicity/"
}