模板法合成稀土大环配合物  

Template Synthesis of Rare Earth Macrocyclic Complexes

作　　者：宋玉民[1] 朱早龙[1] 刘景旺[2] 许军鹏[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070 [2]天津师范大学化学与生命科学学院,天津300074

出　　处：《中国稀土学报》2009年第4期447-452,共6页Journal of the Chinese Society of Rare Earths

基　　金：甘肃省自然科学基金(0710JRZA108);甘肃省高分子材料重点实验室项目资助

摘　　要：用模板法合成了一系列稀土大环配合物,通过元素分析、摩尔电导、红外光谱、核磁共振谱、热重-热差和紫外吸收光谱对其进行了结构表征。结果表明,稀土大环配合物的结构为:[REL(NO3)3].nH2O(RE=Pr,Dy,Nd,n=3;RE=Sm,Eu,La,n=4;L=2,3∶10,11-dibenzo-4,9-tetraoxo-13,15-bis[diene-2(4-hydroxy-3-methoxypheny)]-1,5,8,12-tetraazacyclotrideca-1,12-diene),配合物的产率约为80%。在DMF溶液中配合物为非电解质。配合物中3个硝酸根均以双齿配位的方式与稀土配位,稀土配位数为10,并且含有3～4个结晶水分子。同时研究了配合物在室温下的荧光性质,结果表明配合物表现出相应自由配体的特征发射荧光。Rare earth macrocylic complexes REL （NO3）3·nH2O （RE =Pr, By, Nd, n=3; RE =Sm, Eu, La, n =4; L =2, 3：10,11-dibenzo-4,9-tetraoxo-13,15-bis [ diene-2 （ 4-hydroxy-3-methoxypheny ） ] -1, 5,8,12-tetraazacyclotrideca-1,12-diene） were synthesized by the template reaction in methanol solution. The structure of the complexes was characterized by elemental analysis, 1HNMR, infrared, thermal analysis and molar conductivity, and the yields were about 78%. In these complexes, the NO3^- groups were in bidentate coordination with the RE ions, the coordination number could be 10, and the number of crystal water molecule was 3 or 4. The fluorescent properties of complexes were studied at room temperature and it was found to be the characteristic emissions of curcumin.

关 键 词：稀土 配合物 合成 荧光性质 

分 类 号：O641.33[理学—物理化学]