Ferrocene The Aza Ring And Carboxylic Acid Complexes Of Catalytic Performance

Currently, the study on Ferrocene functional complexes is concentrated mostly in the crystal structures of the complexes, but there is almost no report on the the properties of the complexes, such as the catalytic properties, adsorption, biological activity and so on, as well as the affecting factors. Ferrocene derivatives have high stability of thermal and chemical, diverse and complex three-dimensional structure characteristics. When they coordinate with transition metal ions, which with valence electrons volatile and the space d-orbital, make these complexes have tremendous advantages as homogeneous catalyst and optical functional materials. While the coordination polymers have unique pore structures have special value in the selective ion exchange adsorption. Ferrocene derivatives have potential biological activity, in which the atom (N, O or S) containing lone pair electrons. When they coordinate with metal ions, can form a multi-component molecular system, which both have active groups(ferrocene), and metal ligands center of the special nature, and can form polynuclear metal complexes or coordination polymers. These complexes or coordination polymers can simulate enzyme to catalyze a series of important biological responses in Organisms, and these have great theoretical significance to explore life mechanism, and in the medical field have potential area of value and prospect for development, yet to be further research and development.In this paper, the writer very systematically studied the catalytic properties of 22 functional complexes formed by seven species of Ferrocene Aziridination, acids and thiosulfate acid ligands coordinating with eight species of transition metal ions, in catechol oxidation and hydroquinone oxidation reactions,examined the effect of temperature, pH, amount of catalyst, substrate concentration and solvent on their catalytic properties, and speculate the reaction mechanism. In addition, the catalytic capability of five ferrocene aziridination complexes in cyclohexanone hydride reaction has also been studied.Through a series of experiments we found that the major factor impact the complexes' catalytic properties is the metal ions center, and ligands or structure have some influence. Generally speaking, the complexes that have same metal ions, have similarcatalytic effect. The general rule is that complexes formed with metal ions that have the valence electrons behave good catalytic reactions on the results, while complexes have no valence electrons exhibition poor catalytic effect or no catalytic effect at all. The reason is that during the reaction process phenol hydroxyl oxygen combined with the metal center, the electronic exchange, and generate low metal ion. The metal ions have no valence electrons is hard to combine with oxygen. So the catalytic effect is poor or even no obvious catalytic effect.For catechol oxidation reaction, Co (II) complexes is the best catalyst, Ni (II), Mn (II) complexes second, and Cd (II), Zn (II) complexes majority almost no catalytic effect; For hydroquinone oxidation reaction the Mn (II) complexes is best, Co (II) complexes second, Ni (II) complexes have weak catalytic effect, and Cd (II), Zn (II) behave almost no catalytic effect. Temperature, pH, amount of catalyst, substrate concentration and solvent also affect the complexes' catalytic effect in varying degrees.The paper also studies the metal ion exchange adsorption of five-dimensional, two-dimensional polymers, which is formed by ligand L1 [Fc (CH2C2H2N3) 2] and Ag (I) Mn(II), Co (II), Cd (II),in the solution of Ni(Ac)₂, NiCl₂, Cu(Ac)₂, CuCl₂, Co(Ac)₂, Pb(Ac)₂. It was found that the complexes in the Cu(Ac)₂, CuCl₂, Pb(Ac)₂ solution have better adsorption effect, while in the Ni (Ac)₂, NiCl₂, Co(Ac)₂ solution the metal ion adsorption results are not satisfactory.