Development of Capillary Electriphoretic Reactor and Its Application to Kinetically High-Peformance Metal Complexes

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The capillary electrophoretic reactor (CER) has been developed. The basic idea of CER is to consider the separation process of CE as a chemical reactor for metal complexes. CER method was applied to investigate the dissociation kinetics of lanthanide (III) polyaminocarboxylate complexes and tetradentate cyanoformazane complexes with Zn(II) and Mn(II). In general, complexes of metal ions, such as lanthanide ions, Zn(II) and Mn(II), had been thought to be labile because of large substitution rate constants of coordinated water molecules at the metal ions. On the contrary, it was found that these camplexes had been inert to be amenable to the detection in pre-capillary derivatization CE system with no addition of the ligand in a carrier buffer solution.Inquires into new kinetically high-peformance metal complexes has been made. Thiacalix[4]arenetetrasulfonate (TCAS) and 2-(2'-Hydroxyphenyl)-10-hydroxybenzo[h]quinoline (HPHBQ) were examined as a pre-column chelating reagent for the determination of ultra trace Ni(II) and Be(II) by KD-HPLC of the pre-column derivatization HPLC system with no addition of the ligand in an eluent, respectively. The practical applicability of KD-HPLC methods with TCAS and HPHBQ was also demonstrated.