稀土(La,Ce,Er,Nd)-L-精氨酸-邻菲啰啉三元配合物的合成及其电化学性质  

Synthesis and Electrochemical Activity of Rare Earth( La,Ce,Er,Nd)-L-Arginine-1,10-Phenanthroline Ternary Complex

作　　者：陈华庆[1,2,3] 王卫东[1,2,3] 陆江林[3] 

机构地区：[1]稀有金属化学湖北省协同创新中心,湖北黄石435002 [2]污染物分析与资源化技术湖北省重点实验室,湖北黄石435002 [3]湖北师范学院化学化工学院,湖北黄石435002

出　　处：《中国稀土学报》2015年第2期173-181,共9页Journal of the Chinese Society of Rare Earths

基　　金：湖北省教育厅重点科研项目(D20082202)资助

摘　　要：以L-精氨酸、1,10-邻菲啰啉为配体,在乙醇-水介质中经60℃水浴加热合成了4种稀土三元配合物。配合物分别用络合滴定、摩尔电导、元素分析、紫外光谱、红外光谱、热重-差热分析等表征,推测出配合物化学组成为:[RE(L-Arg)3Phen]Cl3·n H2O。通过循环伏安法测定了配合物在玻碳工作电极上的电化学行为,在设定电位范围-0.30^-0.80 V(vs.SCE),经HAc-Na Ac缓冲溶液(p H约为6),测试配合物及其稀土盐,均表现出电化学活性,且配合物电化学中心是RE3+,电化学行为是准可逆的,配合物的还原峰电流与扫描速度及浓度呈现递增关系。In ethanol medium,one solid ternary complex of Rare earth and arginine acid（ L-Arg） and 1,10-phenanthroline（ Phen·H2O） was synthesized. It was inferred to be [RE（ L-Arg）3Phen]Cl3·nH2O using molar conductance,complexometric titration analysis,elemental analysis,infrared spectra（ IR） and TG-DTA analysis and so on. This article studied electrochemical property of complex. Its electrochemical behavior at a platinum working electrode was tested by cyclic voltammetry. The complex [Re（ L-Arg）3Phen]Cl3·n H2O and RE3＋showed the electrochemical activity at-0. 30 ^-0. 80 V（ vs. SCE） in the HAc-Na Ac buffer solution（ pH ≈6. 0）. The RE^3＋ was electrochemical active center in rare earth complex. The results showed that the complex was a quasi-reversible system and it showed the increasing relationship between the coordination compound＇ s reduction peak and concentration and scan rate.

关 键 词：稀土三元配合物 L-精氨酸 邻菲啰啉 电化学活性 

分 类 号：O614.33[理学—无机化学]