15299 IUPAC Gold Book - polysilazane 10.1351/goldbook.15299 15299 current 1 Polymer composed of macromolecules containing exclusively alternating nitrogen and silicon atoms in the backbone: \[\ce{-[-NR^{1}\bond{-}SiR^{2}\!\,R^{3}\bond{-}]_{n}\bond{-}}\] where \(\ce{R^1}\), \(\ce{R^2}\), and \(\ce{R^3}\) are each hydrogen or an alkyl or aryl group. Polysilazanes can comprise both silicon and nitrogen branching points, the former being formed from ammonia and the latter from, for example, alkyltrichlorosilanes or tetrachlorosilane used as monomers: where \(\ce{R^1}\), \(\ce{R^2}\), and \(\ce{R^3}\) are each hydrogen or an alkyl or aryl group. PAC, 2009, 81, 1131. 'Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)' on page 1166 (https://doi.org/10.1351/PAC-REC-08-01-30) https://goldbook.iupac.org/terms/view/15299/html https://goldbook.iupac.org/terms/view/15299/json https://goldbook.iupac.org/terms/view/15299/plain Citation: 'polysilazane' 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.15299 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. 2026-05-20T16:22:10+00:00