13977 IUPAC Gold Book - rotaxane end-unit 10.1351/goldbook.13977 13977 current abbrev: rot-EU 1 Constitutional unit of a macromolecular rotaxane consisting of an end-group of its macromolecular component and a complementary threading or macrocyclic component. End-group is a constitutional unit that is an extremity of a macromolecule or oligomer molecule. An end-group is attached to only one constitutional unit of a macromolecule or oligomer molecule. macrocyclic component https://goldbook.iupac.org//terms/view/13965 macromolecular rotaxane https://goldbook.iupac.org//terms/view/13968 threading https://goldbook.iupac.org//terms/view/13985 PAC, 2012, 84, 2135. 'Terminology and nomenclature for macromolecular rotaxanes and pseudorotaxanes (IUPAC Recommendations 2012)' on page 2142 (https://doi.org/10.1351/PAC-REC-11-10-15) https://goldbook.iupac.org/terms/view/13977/html https://goldbook.iupac.org/terms/view/13977/json https://goldbook.iupac.org/terms/view/13977/plain Citation: 'rotaxane end-unit' 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.13977 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. 2026-05-09T17:43:26+00:00