Study on EPR Spectra of Three Gadolinium Complexes With Noncyclic Polyether Schiff Bases

作     者：陈德余 姚克敏 封子先 蔡乐真 周佩芬 薛祺 

作者机构：(Department of Chemistry Zhejiang University Hangzhou 310027 PRC 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：1994年第37卷第2期

页      面：153-161页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070302[理学-分析化学] 0703[理学-化学] 

主　　题：gadolinium ion noncyclic polyether Schiff base complexes EPR spectra. 

摘      要：The EPR spectra of three new gadolinium complexes with noncyclic polyether Schiff bases in powder and those of these complexes in organic solvents were investigated at different temperatures. It was observed that EPR spectra of nine and four peaks of Gd(Ⅲ) complexes in polycrystalline powder and freezing samples appeared at low temperature respectively for the first time. The interpretations of these results obtained on the basis of spin Hamiltonian of s = 7/2 system are satisfactory. The correlations of EPR feature between crystal-field strength in complexes and local symmetry around Gd3+ ions were revealed. The crystal-field parameters b20 and the asymmetry parameters λ’ of complexes were estimated. A series of interesting regularity and new results were obtained.