Synthesis,Structure and Magnetic Properties of a Cage-like Cu6Gd6 Compound
作者单位：Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry and Chemical Engineering Liaocheng University Institute of BioPharmaceutical Research Liaocheng University
会议名称：《中国化学会第八届全国配位化学会议》
会议日期：2017年
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：supported by the National Natural Science Foundation of P.R.China(No.21671093 and 21271097)
关 键 词：2-Hydroxy-3-Carboxy-5-Chloro-Benzaldehyde Oxime 3d-4f Complex Slow Magnetic Relaxation
摘 要：The lanthanide-based SMMs are attracting the growing attentions due to the intrinsic strong spin-orbital coupling and magnetic anisotropy of lanthanide(Ⅲ) ions[1].Their promising high anisotropic energy barrier(U) for the magnetization reversal and the blocking temperature(T)play a key role in their potential application in the high-density information storage[2].Based on these considerations,we designed the reaction of 2-hydroxy-3-carboxy-5-chlorobenzaldehyde oxime(H hccbdo) with gadolinium nitrate and copper acetate and obtained a novel dodecanuclear 3 d-4 f complex[Cu Gd(Hhccbdo)(hccbdo)(DMF)(H O)].The coplanar four Gd ions are ligated with carboxyl groups of ligands and form a 16-MC-4 cyclic structure with[Gd-O-C-O]repeating *** 16-MC-4 rings assembled into a rare cage-like *** copper ions are located the outside of the cage(Fig.1).Magnetic susceptibility reveals the ferromagnetic coupling between the metal ions of complex(Fig.2 a),and further AC magnetic data indicates the slow magnetic relaxation,a typical of single-molecule magnets behavior(Fig.2 b).