一例酰腙席夫碱单核铒配合物的构筑、结构及磁性研究  

Construction,structure and magnetic properties of an acylhydrazone-Schiff base mononuclear erbium complex

作　　者：刘婧伟 陈明燕 杜继远 胡紫 马鹏涛[1] 孙琳 LIU Jingwei;CHEN Mingyan;DU Jiyuan;HU Zi;MA Pengtao;SUN Lin(College of Chemistry and Chemical Engineering,Henan University,Kaifeng 475004,Henan,China)

机构地区：[1]河南大学化学化工学院,河南开封475004

出　　处：《化学研究》2021年第5期401-405,共5页Chemical Research

基　　金：河南省科技攻关项目(212102210609);河南省教育厅项目(20A150010)。

摘　　要：采用溶液法,以N_(3)-(2-吡啶基)-3-吡啶甲酰腙(HL)为配体,铒离子为金属离子,制备出一例化学式为[Er(L)(NO_(3))_(2)(CH_(3)OH)_(2)](1)的单核铒配合物。对1进行了单晶X射线衍射测试,结果表明每个不对称单元包含一个九配位的ErⅢ离子,一个L-配体、两个NO-3和两个配位的甲醇分子。随后,对1中ErⅢ离子进行构型计算,结果显示铒离子呈畸变三帽三棱柱构型。此外,采用静态磁性测试对1进行了直流磁化率和磁化强度分析,结果表明1存在反铁磁性的作用,且具有磁各向异性。交流磁化率测试表明配合物1未呈现零场单分子磁体行为。A mononuclear erbium complex[Er(L)(NO_(3))_(2)(CH_(3)OH)_(2)](1)has been synthesized by the solution method,using N_(3)-(2-pyridyl)-3-pyridinecarboxylhydrazone(HL)as the ligand and erbium ion as the metal ion.The single crystal X-ray diffraction of 1 shows that each asymmetric unit contains a nine coordinated Er^(Ⅲ)ion,a L^(-)ligand,two NO_(3)^(-) and two coordinated methanol molecules.Besides,the configuration calculation of Er^(Ⅲ)ions in 1 illustrates that the erbium ions exhibit distorted spherical tricapped trigonal prism(D_(3h))configuration.In addition,the magnetic susceptibility and magnetization of 1 by the static magnetic measurement extrapolates that 1 exists both antiferromagnetic effect and magnetic anisotropy.Alternate current magnetic susceptibility measurement shows that 1 does not exhibit the zero-field single-molecule magnet behavior.

关 键 词：单核铒配合物 构型计算 磁各向异性 

分 类 号：O614[理学—无机化学]