12822 IUPAC Gold Book - coordination polymer 10.1351/goldbook.12822 12822 current 1 A coordination compound with repeating coordination entities extending in 1, 2, or 3 dimensions. Coordination polymers do not need to be crystalline; therefore, the more appropriate terms (for crystalline states) 1-periodic, 2-periodic, and 3-periodic cannot be used throughout. These compounds may in some cases, such as those being composed of mainly carboxylates, even be regarded as salts. The prefix 1D-, 2D-, or 3D- is acceptable for the indicating the degree of extension of the coordination polymer. A classical type of single-chain coordination polymer is the (4,4'-bipyridine-N,N)-bridged cobalt(II) compound depicted in the figure below. Names of this and other example compounds are left out of the main text, as new IUPAC recommendations are being prepared for these materials. An example of a 1D-coordination polymer. Hydrogen atoms on carbon have been left out for clarity.Mauve: $\ce{Co}$; blue: $\ce{N}$; red: $\ce{O}$; grey: $\ce{C}$; white: $\ce{H}$. PAC, 2013, 85, 1715. 'Terminology of metal–organic frameworks and coordination polymers (IUPAC Recommendations 2013)' on page 1716 (https://doi.org/10.1351/PAC-REC-12-11-20) https://goldbook.iupac.org/terms/view/12822/html https://goldbook.iupac.org/terms/view/12822/json https://goldbook.iupac.org/terms/view/12822/plain Citation: 'coordination polymer' 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.12822 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. 2026-07-14T09:31:52+00:00