| Manganese is an indispensable element to biological system, which is forming active centers of several metaloenzymes. These active centers play many important roles in biological system, such as oxidation-reduction, electron transfer, catalyse of lewis acid. In this paper, the development of several manganese-containing metaloenzymes and manganese model complexes are summarized and evaluated on the base of studying many correlating literatures. Some manganese Schiff base model complexes of imidazole type are designed and synthesized. All these are aimed at simulating the structures of active centers of metaloenzymes in biological system and constructing novel metaloenzyme models. The main work is as follows:1. 1,10-phenanthroline was chosen to react with Mn(CH3COO)2.4H2O in 30 mL CH3OH, adjusting its pH to 1.0 with hydrochloric acid. Solvothermal reaction lasted for 20 hours at 423.15K. The complex [Mn(phen)Cl2]n were prepared and characterized. The crystal of the [Mn(phen)Cl2]n was characterized by X-ray crystallography, IR, EPR, and magnetism.2. 1,10-phenanthroline was chosen to react with Mn(CH3COO)2.4H2O in 30 mL CH3OH, adjusting its pH to 6.0 with hydrochloric acid. The complex {Mn3(phen)2(CH3COO)6} were prepared and characterized. The crystal of the {Mn3(phen)2(CH3COO)6} was characterized by X-ray crystallography, IR , EPR, and magnetism.3. 1,10-phenanthroline was chosen to react with MnSO4·H2O in 30 mL CH3OH, stirring about 20 hours. The complex [Mn2(SO4)2(phen)4]·(CH3OH) were prepared and characterized. The crystal of the (Mn2(SO4)2(phen)4]·(CH3OH) was characterized by X-ray crystallography, IR and EPR. |
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