Ligand exchange reactions activation parameters

Kawasaki et al.387,390 have reported the rate constant and activation parameters Ea, AH, AS and AG by H NMR line broadening techniques for the ligand exchange reactions in trimethylantimony(V) and methylphenylantimony(V) oxinates. 

Table 2 Selected exchange rate constants and activation parameters for solvent and ligand exchange reactions on square-planar Pt complexes...

Table 3 Activation parameters for ligand-exchange reactions for TaCl8,MejY in chloroform...

Vanadium(III) reacts with O2 and CIO4 and is easily hydrolyzed (pA = 3.0), all important points to consider in studying its reaction kinetics. An 4 mechanism is favored for H2O exchange (Table 4.5) and for other ligand substitutions. This is supported by the activation parameters and the correlation of with the basicity of the entering ligand (Table 8.2). - ... 

---