氢键双螺旋双核化合物的介电和磁耦合性质  

Dielectric and Magnetic Exchange Natures of a Dinuclear Double-Stranded Hydrogen Bonds Helicates

作　　者：李晶 杨莉 尹磊 蒋尚达[3] 欧阳钟文[2] 张义权[4] 王振兴 宋友 LI Jing;YANG Li;YIN Lei;JIANG Shang-Da;OUYANG Zhong-Wen;ZHANG Yi-Quan;WANG Zhen-Xing;SONG You(State Key Laboratory of Coordination Chemistry,School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China;Wuhan National High Magnetic Field Center,Huazhong University of Science and Technology,Wuhan 430074,China;National Laboratory for Molecular Sciences,State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,China;Jiangsu Key Laboratory for NSLSCS,School of Physical Science and Technology,Nanjing Normal University,Nanjing 210023,China)

机构地区：[1]南京大学化学化工学院,配位化学国家重点实验室,南京210023 [2]华中科技大学武汉国家高磁场中心,武汉430074 [3]北京大学化学与分子工程学院,国家分子科学实验室,国家稀土材料化学与应用重点实验室,北京100871 [4]南京师范大学物理科学与技术学院,江苏省NSLSCS重点实验室,南京210023

出　　处：《无机化学学报》2020年第6期1123-1130,共8页Chinese Journal of Inorganic Chemistry

基　　金：国家重点研发计划(No.2013CB922102,2017YFA0303200);国家自然科学基金(No.21973038,21571097)资助项目。

摘　　要：制备了一个氢键桥联的双核Co(Ⅱ)双螺旋化合物[(L)Co Cl]2·2H2O(L=6-甲基吡啶-2-甲醇),并研究了它的介电和磁性质。磁性测试、HF-EPR谱分析和介电性质均表明,该分子内氢键在磁交换相互作用和介电性能中起着重要作用,从头计算对这一结论给予进一步证明。The dielectric and magnetic properties of a dinuclear Co(Ⅱ)double-stranded helicate containing hydrogen bridging bond have been investigated.Magnetic properties,HF-EPR spectra and dielectric properties all indicate that this intramolecular hydrogen bond plays an important role in the magnetic exchange interactions and dielectric properties.Ab initio calculations provide further support for above conclusions.

关 键 词：螺旋状双核Co配合物 氢桥键 介电 磁交换作用 

分 类 号：O614.81[理学—无机化学]