For a mononuclear binary complex, if a central atom
') and a ligand
have been defined, then in the following expressions
is the stepwise formation constant, and
is the cumulative formation constant for the complex
They can both be referred to as stability constants (stepwise and cumulative).
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: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. doi:10.1351/goldbook