直链醚—二甘肽型Schiff碱与稀土新配合物的合成、配位作用与波谱  

Synthesis, Properties and Magnetic Resonance Spectra of New Rare Earth Complexes with Noncyclic Polyether- glycylglycine Schiff Base

作　　者：吴静[1] 徐青[1] 王奎武[2] 姚克敏[2] 

机构地区：[1]杭州师范学院化学系 [2]浙江大学化学系

出　　处：《化学学报》2001年第8期1290-1293,共4页Acta Chimica Sinica

基　　金：国家自然科学基金，浙江省自然科学基金

摘　　要：合成了稀土与四甘醇醛-二甘肽型Schiff碱(TAGLGL)形成的六种新配合物,在此配体中同时引入了C＝N及HN-C＝O基团.经元素分析、光谱等表征,确定该类多核配合物组成为:[Ln3(TAGLGL)(NO3)7]@4H2O(Ln=La,Nd,Sm,Gd,Yb,Y).以液体1H NMR谱、固体高分辨13C NMR等方法,并结合Gd(Ⅲ)配合物的EPR波谱着重探讨了配位作用,配位数和晶体场强等.Six novel rare earth complexes with noncyclic polyether-glycylglycine Schiff base (TAGLGL) have been synthesized with 'step by step' method. They were confirmed by elemental analysis, IR, etc. and their formulas were established as [Ln(3)(TAGLGL) (NO3)(7)]. 4H(2)O (Ln = La, Nd, Sm, Gd, Yb, Y). Owing to introducing a dipeptide bond with C=N and HN-C=O groups in the ligand, H-1 NMR and solid high resolution C-13 NMR with CPMAS and TOSS techniques and EPR spectra were used for elucidating the crystal field strength, the symmetry in the obtained Gd( III) complex and the coordination of the donor atoms of the ligand with rare earth elements.

关 键 词：稀土配合物 直链醚-二甘肽型Schiff碱 EPR 西佛碱 合成 波谱 配位数 配位场强 

分 类 号：O614.33[理学—无机化学] O625.632[理学—化学]