{"term":{"id":"02485","doi":"10.1351\/goldbook.F02485","code":"F02485","status":"current","longtitle":"IUPAC Gold Book - formation constant","title":"formation constant","termversion":"2.3.3","lastupdated":"2014-02-24","definitions":[{"id":"1","text":"For a mononuclear binary complex, if a central atom (central group) M (the 'metal') and a ligand L have been defined, then in the following expressions Kn is the stepwise formation constant, and β n is the cumulative formation constant for the complex MLn. They can both be referred to as stability constants (stepwise and cumulative). ","links":[{"title":"central atom","type":"goldify","url":"https:\/\/goldbook.iupac.org\/terms\/view\/C00930"}],"math":[{"meaning":"Formation constant (of a complex)","type":"quantity","alttext":"Kn","latex":"K_{n}"},{"alttext":"β n","latex":"\\beta_{n}"},{"meaning":"Formation constant (of a complex)","type":"equation","alttext":"Kn = K(MLn-1 + L ⇌ MLn)","latex":"K_{n}=K(\\text{ML}_{n- 1}+\\text{L}\\rightleftharpoons \\text{ML}_{n})"},{"alttext":"β n = K ( M + n L ⇌ ML n )","latex":"\\beta_{n} = K(\\text{M}+n\\text{L}\\rightleftharpoons \\text{ML}_{n})"}],"sources":["Orange Book, 2nd ed., p. 11 (https:\/\/media.iupac.org\/publications\/analytical_compendium\/)"]}],"referencedin":[{"title":"Wikipedia - Chimie des solutions (fr)","url":"https:\/\/fr.wikipedia.org\/wiki\/Chimie_des_solutions"}],"links":{"html":"https:\/\/goldbook.iupac.org\/terms\/view\/F02485\/html","json":"https:\/\/goldbook.iupac.org\/terms\/view\/F02485\/json","xml":"https:\/\/goldbook.iupac.org\/terms\/view\/F02485\/xml","plain":"https:\/\/goldbook.iupac.org\/terms\/view\/F02485\/plain","pdf":"https:\/\/goldbook.iupac.org\/terms\/view\/F02485\/pdf"},"citation":"Citation: 'formation constant' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351\/goldbook.F02485","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":"2024-02-23T02:58:58+00:00"}}