氰桥化合物[cis-Fe(bpy)2(CN)2Mn(L)]2[PF6]4的合成及其对金属离子选择识别作用  

Synthesis of Cyanide-bridge Complex [cis-Fe(bpy)2(CN)2Mn(L)]2[PF6]4 and Interactions with Selected Metal Ions

作　　者：于孟 万方 胡建梅 王勇[2] 李立[2] 刘生鹏[1] YU Meng;WAN Fang;HU Jian-mei;WANG Yong;LI Li;LIU Sheng-peng(School of Chemical Engineering Pharmacy,Wuhan Institute of Technology,Wuhan 430205,China;Hubei Key Laboratory of Drug Synthesis and Optimization,Jingchu University of Technology,Jingmen 448000,China)

机构地区：[1]武汉工程大学化工与制药学院,湖北武汉430205 [2]荆楚理工学院药物合成与优化湖北省重点实验室,湖北荆门448000

出　　处：《化学试剂》2020年第2期193-198,共6页Chemical Reagents

基　　金：湖北省教育厅科学技术研究项目(Q20174302,Q20194301);荆楚理工学院培育项目(PY201901)。

摘　　要：将Mn(Ⅱ)离子、有机配体L(L=1,6-二苯基-2,5-双(2-甲基吡啶基)-2,5-二重氮己烷)和氰基化合物cis-FeⅡ(bpy)2(CN)2·3H2O(bpy=2,2′-联吡啶)在NH4PF6存在下制备一个四元环异核氰桥化合物即标题化合物,并对其结构进行表征。重金属离子对标题化合物的荧光响应研究表明,标题化合物对Cu(Ⅱ)和Fe(Ⅲ)有很好的选择性。随着金属离子Cu(Ⅱ)和Fe(Ⅲ)的加入,标题化合物的荧光强度逐渐降低至基本消失。随着金属离子Pb(Ⅱ)和Fe(Ⅱ)的加入,标题化合物的荧光强度逐渐降低,当金属离子加到一定浓度,标题化合物的荧光强度不随金属离子的变化而变化。对于Co(Ⅱ)、Cr(Ⅲ)、Mn(Ⅱ)、Cd(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)等离子,随着金属离子的加入标题化合物的荧光强度改变甚微或不改变。A cyanide-bridged square title complex was synthesized by the reaction of Mn(Ⅱ) ions,organic ligand L and compound cis-FeⅡ(bpy)2(CN)2·3 H2O in the presence of NH4PF6.The title compound was confirmed by electronic absorption spectroscopy,elemental analysis,IR and X-ray single crystal diffraction analysis.The fluorescence response of heavy metal ions showed that the title compound had a good selectivity for Cu(Ⅱ) and Fe(Ⅲ) ions.With the addition of metal ions Cu(Ⅱ) and Fe(Ⅲ),the fluorescence intensity of the title compound gradually decreased or even disappeared completely.With the addition of metal ions Pb(Ⅱ) and Fe(Ⅱ),the fluorescence intensity of the title compound gradually decreases.When metal ions were added to a certain concentration,the fluorescence intensity of the title compound did no change with the addition of metal ions Pb(Ⅱ) and Fe(Ⅱ).For Co(Ⅱ),Cr(Ⅲ),Mn(Ⅱ),Cd(Ⅱ),Ni(Ⅱ),Zn(Ⅱ) ions,the fluorescence intensity of the title compound changed a little or no change with the addition of metal ions.

关 键 词：荧光光谱 氰桥 Cu(Ⅱ)离子 晶体结构 识别 

分 类 号：O621.3[理学—有机化学]