In summary, ligand substitution is the process of replacing one ligand with another in a coordination complex. In first row transition metal complexes, this process is studied to understand kinetics and thermodynamics, as well as the stability and reactivity of different ligands. Ligands play a crucial role in determining the physical and chemical properties of these complexes, including electronic structure, magnetic properties, color, and reactivity. Inner sphere and outer sphere ligand substitution differ in their effects on the coordination number of the metal ion. The electronic properties of first row transition metal complexes can significantly influence the reactivity of the complex towards substitution reactions, and common techniques used to study these reactions include UV-Vis spectroscopy, NMR spectroscopy, X-ray crystallog
#1
Entropia
1,474
2
anybody know what the primary mode of ligand substitution for first row octahedral transition metal complexes?
like path with 7 ligand initermediate or 5 ligand intermediate?
or you means the molecular orbital interaction ?
#3
ravenprp
2,891
0
The primary mode of ligand substitution for first row octahedral transition metal complexes is typically known as an associative mechanism, also referred to as the "outer sphere" mechanism. This involves the incoming ligand approaching the metal center while the leaving ligand remains coordinated, resulting in a pentacoordinate intermediate. The incoming ligand then replaces the leaving ligand, resulting in the formation of the new complex. However, in some cases, a dissociative mechanism may also occur, where the leaving ligand dissociates before the incoming ligand coordinates to the metal center. The choice between these two mechanisms depends on various factors such as the nature of the ligands, the steric and electronic properties of the metal center, and the solvent used.