Title: vibrational circular dichroism Long Title: IUPAC Gold Book - vibrational circular dichroism DOI: 10.1351/goldbook.08704 Status: current Definition Circular dichroism, \(k^{\rm{L}} – k^{\rm{R}}\), for vibrational transitions. Note Vibrations in chiral molecules and materials absorb left circularly polarized radiation to a different extent than right circularly polarized radiation. Source - PAC, 2021, 93, 647. 'Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)' on page 768 (https://doi.org/10.1515/pac-2019-0203) Other Outputs - html: https://goldbook.iupac.org/terms/view/08704/html - json: https://goldbook.iupac.org/terms/view/08704/json - xml: https://goldbook.iupac.org/terms/view/08704/xml Citation: Citation: 'vibrational circular dichroism' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.08704 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Collection: If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using. Accessed: 2026-06-29T11:32:08+00:00