摘要
在水溶液中合成了一对单核铜-酪氨酸手性配合物[Cu(L-Tyr)_2](1)和[Cu(D-Tyr)_2](2)[Tyr=酪氨酸],并通过元素分析、红外光谱和X射线单晶衍射以及圆二色光谱对其结构进行了表征.结构分析表明1和2是由单位[Cu(L-Tyr)_2]或者[Cu(D-Tyr)_2]通过Cu-O键连接而成的一维链状结构.从超分子化学的角度来看,邻近的单位[Cu(L-Tyr)_2]或者[Cu(D-Tyr)_2]之间通过弱的氢键相互作用而连接成三维超分子结构.1和2的变温磁化率的研究表明1和2表现出铁磁性行为.而且场依存磁化测量表明1和2处于S=1/2基态.
A couple of chiral mononuclear copper(II)-tyrosine complexes[Cu(L-Tyr)2](1)and[Cu(D-Tyr)2](2)[Tyr=tyrosine]have been successfully synthesized in the aqueous solution and further characterized by elemental analyses,IR spectra,single-crystal X-ray diffraction and circular dichroism(CD)spectroscopy.Structural analysis indicates that 1 and 2 exhibit the interesting 1-D chainlike arrangement architected from the[Cu(L-Tyr)2]or[Cu(D-Tyr)2]units connected by Cu-O linkages.From the view of supramolecular chemistry,neighboring[Cu(L-Tyr)2]or[Cu(D-Tyr)2]units are interlinked through weak hydrogen-bonding interactions constructing the 3-D supramolecular structure.Variable-temperature magnetic susceptibilities of 1 and 2 were investigated,indicating that 1 and 2 exhibit the dominant ferromagnetic behavior.Moreover,the field-dependent magnetization mea-surements suggest that 1 and 2 possess an S=1/2 ground state.
作者
温悦
韩庆
刘建彩
陈利娟
WEN Yue;HAN Qing;LIU Jiancai;CHEN Lijuan(Henan Key Laboratory of Polyoxometalate Chemistry,College of Chemistry and Chemical Engineering, Henan University,Kaifeng 475004,Henan,China)
出处
《化学研究》
CAS
2018年第2期131-140,共10页
Chemical Research
基金
Supported by the Natural Science Foundation of China(21671054)
the Students Innovative Pilot Plan of Henan University(16NA005)
关键词
铜(II)-酪氨酸配合物
手性
磁性
copper(II)-tyrosine complexes
chirality
magnetic properties
