Koordinationsselektivität und die Thermodynamik der Komplexbildung in Lösung

Abstract

The solution stabilities of metal complexes are extensively reviewed. Two extreme types of coordination behaviour can be distinguished readily, one shown by the d⁰-cations (prototypes for electrovalent behaviour), the other by the singly charged d¹⁰-cations (prototypes for covalent behaviour). The character of all other metallic centres can be described as mixed. The influence of long-range Coulombic forces, as well as of short-range non-electrostatic forces (covalency, ligand field stabilisation, steric effects), on the thermodynamic functions of association processes in solution is also discussed.