喹啉-2-甲酸锰配合物的合成、晶体结构与荧光性质的研究

Synthesis, Crystal Structure and Fluorescent Properties of Complex of Quinolone-2-carboxylic Acid

以喹啉-2-甲酸为配体,与硫酸锰通过水热法合成了一种锰的配位化合物。通过红外光谱、热重分析、X射线单晶衍射和荧光光谱等对其进行表征。结果表明:该配合物的组成为Mn L2(H2O)2。配合物晶体属于单斜晶系,P21/a空间群;晶胞参数是:a=0.731 69(4) nm,b=1.310 49(7) nm,c=1.002 63(6) nm,β=107.354 3(16)°,V=0. 917 63(9) nm3,Z=2,Mr=435.29,Dc=1.575 g/cm3。中心Mn(II)离子的配位环境为变形的八面体构型。配合物存在着分子间作用力和氢键作用,其共同将配合物扩展为三维超分子结构。另外,研究了配体和配合物的荧光性质,结果表明两种物质均具有良好的荧光性。

One coordination complex of quinoline-2-carboxylic acid with manganese sulfate has been synthesized by hydrothermalmethod. Its composition was determined to be MnL2（H2O）2 by IR, TG and X-ray. The complex was monoclinic system, belonging tospace group P21/a, with a=0.731 69（4） nm,b=1.310 49（7） nm,c=1.002 63（6） nm,β=107.3543（16）°,V=0. 917 63（9） nm3,Z=2,Mr=435.29,Dc=1.575 g/cm3. The Mn（II） ion-centered coordination environment was a slightly distorted octahedral configuration.The complexes had intermolecular forces and hydrogen bonds, which together extended the complex intoa three -dimensionalsupramolecular structure. In addition, the fluorescent properties of the ligand and the complex were studied. Two substances had goodfluorescence.