Diffusion coefficients and complex equilibria in solution-V Limitations to the validity of the diffusion equations.
The ligand-concentration dependence of the limits of applicability of equations involving diffusion parameters and ligand numbers is discussed. Estimation of - n from preliminary values of formation constants derived from the pseudo-formation curve often provides proof of the direct correlation between -n and Deltai(d) for a proportion of the ligand concentration range, but not all of it. The limitation is especially noticeable for systems where full co-ordination is approached well within the range of experimental values of ligand concentration.
Crow
D R
DR
School of Applied Sciences, The Polytechnic, Wolverhampton, England.