稀土与亮氨酸、咪唑三元配合物的合成及其性能研究

Synthesis and Properties Study of Ternary Complex of Rare Earth with L-Leucine and Imidazoles

目的:稀土、亮氨酸、咪唑三元配合物的合成及其性能考察。方法:在乙醇介质中,以氯化稀土盐与L-亮氨酸、咪唑反应合成三元固态配和物,利用化学分析、元素分析、红外光谱分析、摩尔电导率测定及热重分析、生物活性试验等方法对配合物的组成结构、性质性能、热分解机制与热稳定性及抑菌作用等进行研究。结果:确定配合物的组成结构为1∶3型电解质[RE(Leu)3I m(H2O)]Cl3·2H2O,并初步确定了该配合物的热分解动力学过程、稳定性及对大肠杆菌的抑菌作用。结论:合成的三元配合物组成及性能稳定,初试具有良好的抑菌作用。

OBJECTIVE： To synthesize ternary complex of rare earth with L- Leucine and imidazoles and to determine its properties. METHODS： The ternary solid complex was synthesized from the reaction of rare earth chlorate with L- Leucine and imidazoles in the medium of alcohol,and the compositional analysis, properties, mechanism of thermolysis, thermostability and the bacteriostatic action of the ternary complex were studied by chemistry analysis, chemical elements analysis, infrared spectral （IR） analysis, molar conductivity measurement and derivative thermogravimetry （TG-DTG） analysis, bioactivity experiments etc. RESULTS： The constitute structure of the ternary complexes was detected to be electrolyte 1 ： 3 type [RE （Leu）3Im（H2O） ]Cl3 . 2H2O）,meanwhile, the thermolysis dynamics, thermostability and the bacteriostatic action against E coli of the ternary complex were established preliminarily. CONCLUSION： The composition and the property of the ternary complexes are stable and which were found to be of good bacteriostatic action in the preliminary examination.