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formation constant

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 K n 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).
K n = K ( ML n − 1 + L ⇌ ML n )
β n = K ( M + n L ⇌ ML n )
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IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
Last update: 2014-02-24; version: 2.3.3.
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