Solid-State Synthesis And Properties Of Fat Polyamine-Co Oxygenated Complexes

Oxygen carriers are certain important transition metal complexes which can transport and store oxygen reversibly in living bodies. The study on oxygen carriers is of important significance in military and civil applications, especially in the fields of oxygen separation, metal anti-corrosion and keeping fruits fresh.Recently, solid-state reaction shows its great advantages in coordination chemistry. It breaks through rules of traditional liquid phase reaction and certain products can only be prepared by solid-state reaction. So introduction of solid-state reaction into the research of transition metal complexes of oxygen carriers would get a new break. To establish this view, we have used solid-state reaction method to prepare some cobalt complexes as oxygen carriers, to study their oxygenation properties and to compare them with those obtained from classic liquid phase methods. The contents of this work contain four parts:1. Recent development of oxygenation of cobalt complexes was reviewed, such as the structure and properties of some typical oxygen carriers. Their significance as model of natural oxygen carriers and potential applications in industrial processes were discussed.2. A series of cobalt complexes were prepared from diethylenetriamine, riethylene-tetramine and tetraethylene-pentamine with cobalt(II) acetate tetrahydrate, and cobalt(II) nitrate hexahydrate via liquid-solid reaction at room temperature. Four oxygenated complexes were isolated and characterized by elemental analysis, IR, TG-DTA and molar conductance. It was found that all complexes prepared by liquid-solid reaction could absorb oxygen. The complexes produced by Cobalt(II) acetate tetrahydrate with diethylenetriamine, riethylene-tetramine and tetraethylene-pentamine were 1:2 complexes of one mole Cobalt(II) and two mole ligands, which could...