A rhombic Dy_(4)-based complex showing remarkable single-molecule magnet behavior  

一例具有显著单分子磁体行为的菱形Dy_(4)基配合物

作　　者：HOU Yinling JI Jia YU Hong BIAN Xiaoyun GUAN Xiaofen QIU Jing REN Shuyi FANG Ming 侯银玲;季甲;于鸿;边霄昀;关晓芬;邱静;任舒怡;方明(凯里学院,贵州省微介孔纳米材料制备与应用特色重点实验室,凯里556011;河北科技师范学院化学系,秦皇岛066004;太原师范学院化学与材料学院,晋中030619)

机构地区：[1]Key Laboratory of Preparation and Application of Micro&Mesoporous Nanomaterials of Guizhou Province,Kaili University,Kaili,Guizhou 556011,China [2]Department of Chemistry,Hebei Normal University of Science&Technology,Qinhuangdao,Hebei 066004,China [3]College of Chemistry and Materials,Taiyuan Normal University,Jinzhong,Shanxi 030619,China

出　　处：《无机化学学报》2025年第3期605-612,共8页Chinese Journal of Inorganic Chemistry

基　　金：凯里学院校级规划课题(No.2022ZD07)资助。

摘　　要：A tetranuclear Ln(Ⅲ)-based complex:[Dy_(4)(dbm)_(4)(L)_(6)(μ_(3)-OH)_(2)]·CH_(3)CN(1)(HL=5-[(4-methylbenzylidene)amino]quinolin-8-ol,Hdbm=dibenzoylmethane)was manufactured and its structure was characterized in detail.Xray diffraction analysis shows that complex 1 belongs to the monoclinic crystal system and its space group is P2_1/n,which contains a rhombic Dy_(4)core.Magnetic measurements of 1 suggest it possesses extraordinary single-molecule magnet(SMM)behavior.Its energy barrier U_(eff)/k_(B)was 116.7 K,and the pre-exponential coefficient τ_(0)=1.05×10~(-8)s.CCDC:2359322.构筑了一例四核Ln(Ⅲ)基配合物[Dy_(4)(dbm)_(4)(L)_(6)(μ_(3)-OH)_(2)]·CH_(3)CN(1)(HL=5-[(4-甲基苄亚基)氨基]喹啉-8-醇,Hdbm=二苯甲酰甲烷),并对其晶体结构进行了详细表征。单晶X射线衍射结果表明,配合物1属于单斜晶系,空间群为P2_(1)/n,包含一个菱形Dy_(4)核。磁性测试结果显示,1具有优异的单分子磁体行为,其能垒U_(eff)/k_(B)为116.7 K,指前系数τ_(0)=1.05×10^(-8)s。

关 键 词：tetranuclear Dy(Ⅲ)complex Schiff base ligand crystal structure magnetic property single⁃molecule magnet 

分 类 号：O614.342[理学—无机化学]