Title: sulfonic anhydrides Long Title: IUPAC Gold Book - sulfonic anhydrides DOI: 10.1351/goldbook.S06119 Status: current Definition Compounds having the structure $\ce{RS(=O)2OS(=O)2R'}$, e.g. $\ce{PhS(=O)2OS(=O)2Ph}$ benzenesulfonic anhydride. Related Term - acid anhydrides: https://goldbook.iupac.org/terms/view/A00072 Source - PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1369 (https://doi.org/10.1351/pac199567081307) Other Outputs - html: https://goldbook.iupac.org/terms/view/S06119/html - json: https://goldbook.iupac.org/terms/view/S06119/json - xml: https://goldbook.iupac.org/terms/view/S06119/xml Citation: Citation: 'sulfonic anhydrides' 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.S06119 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: 2026-07-25T23:21:22+00:00