electrical anharmonicity

synonym: anharmonicity
https://doi.org/10.1351/goldbook.08591
Influence of terms that are of 2nd and higher order in the normal coordinate Q in the expansion of the electric dipole moment.
Note:
Electrical anharmonicity should not be confused with mechanical anharmonicity.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 744 [Terms] [Paper]