L-苏氨酸铜(Ⅱ)超分子配合物的合成、晶体结构及性质  

Synthesis,Crystal Structure and Properties of L-Threonine Copper(Ⅱ) Supermolecular Complex {[Cu(C_4H_8NO_3)_2]·H_2O}

作　　者：郭应臣[1] 邱东方[1] 包晓玉[1] 黄群增[1] 

机构地区：[1]南阳师范学院化学与制药工程学院,河南南阳473061

出　　处：《化学通报》2010年第1期79-82,共4页Chemistry

基　　金：河南省自然科学基金项目(0611023700)资助

摘　　要：合成了L-苏氨酸铜(Ⅱ)超分子配合物[Cu(C4H8NO3)2].H2O,通过元素分析、红外、差热-热重、紫外光谱和单晶结构对其结构进行确认。该化合物由1个Cu(Ⅱ)离子、2个L-苏氨酸阴离子和1分子结晶水组成,其中氨基酸的羧基氧原子及氨基氮原子与铜(Ⅱ)离子配位,形成六配位拉长八面体构型,单胞之间通过分子间氢键构成三维网状超分子体系。配合物在水溶液中的紫外吸收波长为233nm,固态荧光发射之间通过分子间氢键构成三维网状超分子体系。配合物在水溶液中的紫外吸收波长为233nm,固态荧光发射出现在357nm。电化学行为显示,配合物在玻碳电极上为不可逆的氧化还原过程,反应过程受扩散控制。A supermolecular complex [ Cu （C4H8NO3 ）2 ] H2O was synthesized and characterized by elementary analysis, IR, UV, TG and DTA and crystal X-ray diffraction analysis. TG and DTA revealed that the complex contains one molecule of crystal water. The analysis of crystal structure indicates that it consists of a Cu（Ⅱ ） ion, two L-threonine and a crystal water molecules. The coordinate geometry of the Cu atom was a distorted square planar configuration. The 1-D elongated octahedral chain structure was formed by the four-coordinated Cu （ Ⅱ） ion with two oxygen atoms from neighboring L-threonines. Various hydrogen bonds, such as O-H …O, N-H… O, presented in the 2-D chain structure and 3-D supermolecular system. The complex displayed a distinct absorption band at 233nm in aqueous solution and a photoluminescent band at 357 nm in solid state. The electrochemical behavior of the complex showed an irreversible wave which controlled by the diffusion process.

关 键 词：L-苏氨酸超分子铜(Ⅱ)配合物 晶体结构性质 

分 类 号：O621.13[理学—有机化学] O614.121[理学—化学]