摘要
在水热条件下,将HL(HL=5-(3-(4H-1,2,4-triazol-4-yl)phenyl)-1H-tetrazole)这种含氮杂环类的有机配体与金属镉离子反应,成功合成了一种新型的配位化合物[Cd(L)2(H2O)4]n(1,CCDC:2189633)。晶体结构分析发现,配合物1为三斜晶系P-1空间群,晶胞参数a=7.4229(2)Å,b=9.0991(3)Å,c=9.2040(3)Å,α=85.172(2),β=71.206(2),γ=73.564(2)°,V=564.44(3)Å3,Z=1。配合物1中丰富的氢键将单核分子[Cd(L)2(H2O)4]连接成三维超分子结构。本文讨论了配合物1在常见溶剂中的荧光性质,发现其对硝基苯具有高效灵敏识别的能力(Ksv=2.87×105 M-1),并通过粉末X射线衍射(PXRD)和密度泛函理论(DFT)计算简要分析了其荧光淬灭机理。
A novel coordination compound[Cd(L)_(2)(H_(2)O)_(4)]n(1,CCDC:2189633)was successfully synthesized by react-ing HL(HL=1-(triazol-5-yl)-3-(4H-1,2,4-triazol-4-yl)benzene),an organic ligand containing nitrogen heterocyclic com-pounds,with cadmium ions under hydrothermal conditions.Single crystal structure analysis revealed that compound 1 crystal-lizes in the triclinic P-1 space group.The parameters of its unit cell were listed as follows:a=7.4229(2)Å,b=9.0991(3)Å,c=9.2040(3)Å,α=85.172(2),β=71.206(2),γ=73.564(2)°,V=564.44(3)Å3,Z=1.The abundant hydrogen bonds in com-pound 1 connect the mononuclear molecule[Cd(L)2(H2O)4]into a three-dimensional supramolecular structure.The fluores-cence properties of complex 1 in different common solvents were discussed.The experimental results show that complex 1 has the ability to recognize nitrobenzene(K_(sv)=2.87×10^(5) M^(-1))with high efficiency and sensitivity.And the fluorescence quench-ing mechanism was investigated through PXRD and DFT theory calculation and discussed briefly.
作者
胡甍
奚燕
孙佳音
HU Meng;XI Yan;SUN Jiayin(School of Chemistry and Chemical Engineering,Anqing Normal University,Anqing 246133,China;College of Pharmacy,Anqing Medical College,Anqing 246052,China)
出处
《安庆师范大学学报（自然科学版）》
2023年第4期84-89,共6页
Journal of Anqing Normal University(Natural Science Edition)
基金
国家自然科学基金(21401005)
安徽省自然科学基金(2008085QB55)
安徽省科研编制计划项目(2022AH030105)。
关键词
配合物
镉
荧光识别
硝基芳烃化合物
coordination compound
cadmium
fluorescence quenching
nitrobenzene compound
