Dear Sadegh,
The stability constant or the formation constant or the binding constant is an equilibrium constant for the formation of a complex (between a metal and ligand) in solution. The stability constant is a measure of the strength of the interaction between the metal and ligand to yield a complex.
M + L = ML where M, L and ML are metal, ligand and complex ligand-metal, respectively.
K = [ML] / [M] x [L].
High K values indicate a strong and stable complex, whereas low K values indicate a weak and relatively unstable complex.
References:
Beck, M. T.; Nagypál, I. (1990). "Chapter 1". Chemistry of Complex Equilibria. Horwood. ISBN 0-85312-143-5.
Rossotti, F. J. C.; Rossotti, H. (1961). The Determination of Stability Constants. McGraw–Hill.
Hoping this will be helpful,
Rafik
Dear Sadegh,
The stability constant or the formation constant or the binding constant is an equilibrium constant for the formation of a complex (between a metal and ligand) in solution. The stability constant is a measure of the strength of the interaction between the metal and ligand to yield a complex.
M + L = ML where M, L and ML are metal, ligand and complex ligand-metal, respectively.
K = [ML] / [M] x [L].
High K values indicate a strong and stable complex, whereas low K values indicate a weak and relatively unstable complex.
References:
Beck, M. T.; Nagypál, I. (1990). "Chapter 1". Chemistry of Complex Equilibria. Horwood. ISBN 0-85312-143-5.
Rossotti, F. J. C.; Rossotti, H. (1961). The Determination of Stability Constants. McGraw–Hill.
Hoping this will be helpful,
Rafik
While I cannot say definitively that there are no cases where the situation may be linear. the more common is that it is NOT linear. There are often cooperative effects that cause increasing stability when binding the second, third, etc ligand.
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