Study of stability of metal complexes with reference to the nature of metal ion and ligand and factors affecting the stability
Keywords:
Size and charge of ligand, Chelate effect, transformationAbstract
The stability of compounds means in a most general sense, the compounds exist under suitable conditions may be stored for a long period of time. However when the formation of complexes in solution is studied, two types of stabilities, thermodynamic stability and kinetic stability are considered. In the language of thermodynamics, the equilibrium constants of a reaction are the measure of the heat released in the reaction and entropy change during reaction. The greater amount of heat evolved in the reaction, the most stable are the reaction products. Secondly, greater the increase in entropy during the reaction, greater is the stability of products. The kinetic stability of complexes refers to the sped with which transformation leading to the attainment of equilibrium will occur.
References
Irving, H. M. N. H.; Williams, R. J. P. (1953). "The stability of transition-metal complexes". J. Chem. Soc.: 3192–3210.
Orgel, L. E. (1966). An introduction to transition-metal chemistry: ligand-field theory (2nd ed.). London: Methuen.
Chand, S. (2000). Advanced Inorganic chemistry. Volume 2. 50-55.
Prof. Robert J. Lancashire, URL http://wwwchem.uwimona.edu.jm/courses/IrvWill.html.