新型N-O螯合喹啉羧酸配体-Ni(Ⅱ)配合物的合成、晶体结构及荧光性质研究

Synthesis,Crystal Structure and Fluorescence Properties of a New Complex of[Ni(Qina)_(2)(Cl)_(2)]·10(H_(2)O)_(2)

采用常温合成法,由NiCl_(2)•6H_(2)O与喹哪啶酸成功合成双喹啉羧酸镍基配合物[Ni(Qina)_(2)Cl_(2)]•10H_(2)O(Qina:喹哪啶酸根),并成功制得其单晶。通过X射线单晶衍射、元素分析、红外光谱和荧光光谱等方法对其结构和荧光性质进行了分析。单晶结构分析表明,配合物为反式六配位模式,通过氢键网络作用连接晶格游离水。荧光测定显示,该配合物具有明显的荧光效应且荧光光谱表现出明显斯托克斯位移。

In this work,a new complex of[Ni(Qina)_(2)(Cl)_(2)]•10(H_(2)O)_(2)(Qina=2-quinolinecarboxylic-carboxylate)was successfully synthesized and the structure was determined using single crystal X-ray diffraction.The complex is crystallized in the monoclinic system with P-1 space group:each atom of Ni(Ⅱ)was chelate by one Qina group.The structure of the complex was characterized by infrared spectroscopy,and elemental analysis.The supramolecular structures and the weak intermolecular force of the complex were deduced.Fluorescence determination showed that the complex had an obvious fluorescence effect,and the fluorescence spectrum showed an obvious Stokes shift.