Abstract
The kinetic and thermodynamic behavior of the metal complex formation in aqueous solutions of the divalent metal ions Co2+, Ni2+, Cu2+, and Zn2+ with murexide− * and of Fe (III) with thiocyanate being the new ligands, respectively, were investigated up to 2 kbar at 298.16 K using the temperature-jump relaxation method. The overall reaction scheme in the case of the divalent metal ions is given by (1) The hydrated metal ion Maq 2+ reacts with the hydrated ligand Laq − forming the hydrated complex MLaq 2+ where one water molecule of the inner coordination sphere of the m ital ion is substituted by the new ligand. The overall rate constants of the forward and backward reactions are kf and kb, respectively.
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