08992 IUPAC Gold Book - metathesis polymerization 10.1351/goldbook.08992 08992 current 1 Polymerization in which unsaturated monomers are transformed into unsaturated polymers by a process of bond redistribution. Metathesis polymerization is most often metal-catalyzed and the kinetic-chain carriers alternate between metal-carbene complexes and metallacyclobutanes or between metal-carbyne complexes and metallacyclobutenes. The two most common forms of metathesis polymerization are ring-opening metathesis polymerization (ROMP) and acyclic diene metathesis polymerization (ADMET). ADMET is not a chain polymerization. ring-opening metathesis polymerization https://goldbook.iupac.org//terms/view/08933 PAC, 2022, 94, 1093. 'Terminology for chain polymerization (IUPAC Recommendations 2021)' on page 1133 (https://doi.org/10.1515/pac-2020-1211) https://goldbook.iupac.org/terms/view/08992/html https://goldbook.iupac.org/terms/view/08992/json https://goldbook.iupac.org/terms/view/08992/plain Citation: 'metathesis polymerization' 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.08992 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. If you are interested in licensing the Gold Book for commercial use, please contact the IUPAC Executive Director at executivedirector@iupac.org . 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. 2026-05-30T09:39:20+00:00