摘要
利用2,2,6,6-四甲基庚二酮阴离子(thd-)和1,3,4,5-四甲基咪唑鎓阳离子(Tmim^+)合成了一例单核Dy(Ⅲ)配合物(Tmim)[Dy(thd)_4],通过X射线单晶衍射、元素分析等对其进行了结构表征并研究了该配合物的磁学性质。Dy(Ⅲ)中心处于正方反棱柱(D_(4d))的配位环境,其SAPR-8参数为0.316。空间分布中,每个[Dy(thd)_4]-阴离子被Tmim^+阳离子有规律地分开,Dy…Dy最短距离为1.229 8 nm。磁性研究表明配合物1具有场诱导的单离子磁体行为,在500 Oe直流场下能垒达到30.9 K。
A mononuclear dysprosium(Ⅲ)complex,namely(Tmim)[Dy(thd)4](1),was synthesized by the combination of 2,2,6,6-tetramethylheptanedione(thd-)anion ligand and a 1,3,4,5-tetramethylimidazolium(Tmim+)cation balancing the charge.Complex 1 was structurally and magnetically characterized.The coordination geometry of Dy(Ⅲ)ion is ascribed to approximately square antiprismatic(D4d)symmetry with the SAPR-8 parameter of 0.316.In the solid state,every mononuclear[Dy(thd)4]-anion is separated by Tmim+cations regularly and the shortest Dy…Dy distance is 1.229 8 nm.Magnetic studies suggest that complex 1 behaves as a single-ion magnet under 500 Oe dc-applied field with a high effective energy of 30.9 K.CCDC:1837597.
作者
葛景园
陈忠研
马建平
黄帅
杜佳
王海欧
苏昆朋
王海英
GE Jing-Yuan;CHEN Zhong-Yan;MA Jian-Ping;HUANG Shuai;DU Jia;WANG Hai-Ou;SU Kun-Peng;WANG Hai-Ying(College of Materials and Environmental Engineering,Hangzhou Dianzi University,Hangzhou 310018,China;State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China;School of Chemistry,Chemical Engineering and Materials Science,Shandong Normal University,Jinan 250014,China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2018年第9期1761-1767,共7页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.11604067,11704091),杭州电子科技大学科研启动基金(No.KYS205618010)和南京大学配位化学国家重点实验室开放研究基金(No.SKLCC1810)资助项目。
关键词
配位化学
镝配合物
晶体结构
磁学性质
coordination chemistry
dysprosium complexes
crystal structure
magnetic properties
