Synthesis of Cyclic and Acyclic Schiff-base Compounds and Development of Unique Dicobalt Complexes with Supramolecular Functions

Abstract

Schiff-base is a useful tool for construction of a variety of functional compounds owing to its synthetic utility and versatility. Desired cyclic and acyclic Schiff base compounds were selectively obtained in appropriate condition. Coordination sphere provided by Schiff base compound is suitable for metal ion binding to form mono- and di-nuclear metal complexes. Unique properties of dicobalt complexes with Schiff-base ligand were developed in this study. Supramolecular functions of dicobalt complexes based on reversible redox change of metal centers accompanied with structural switching were reported. Furthermore, unique catalysis of dialkylated cobalt complex such as carbon-carbon bond formation and DNA scission were described.