基于混合配体的镍(Ⅱ)配合物的晶体结构、荧光性质和磁性研究

室温下,以对氯苯乙酸(PCPA)、1,10-邻菲啰啉(phen)和六水合硫酸镍为原料,通过溶剂挥发法合成了镍配合物Ni(PCPA)₂(phen)H₂O],并用X射线单晶衍射测定了该金属有机配合物的晶体结构。结果显示,配合物属于单斜晶系,P2₁/n空间群,每个不对称单元由一个镍(Ⅱ)离子、两个对氯苯乙酸配体和一个1,10-邻菲啰啉配体组成。荧光光谱分析结果表明,配合物的激发峰和发射峰分别在336 nm和393 nm;热稳定性分析表明,配合物在室温下稳定;磁性测量表明,配合物存在反铁磁相互作用。

Crystal Structure,Fluorescent Properties and Magnetism of Ni (Ⅱ)Complex Based on Mixed Ligands

The nickel (Ⅱ) complex Ni(PCPA)₂(phen)H₂O] was synthesized by solvent evaporation method, with p-chlorophenylacetic acid(PCPA),1,10-phenanthroline(phen) and nickel sulfate hexahydrate as main raw materials. The crystal structure of the metal-organic complex was determined by single crystal X-ray diffraction method. The results show that complex crystallizes in the monoclinic space group P2₁/n with each asymmetric unit consisting of one Ni(Ⅱ) ion, two p-chlorophenylacetic acid ligands and one 1,10-phenanthroline ligand.Fluorescence spectrum analysis shows that the excitation peak of complex is 336 nm, emission peak of complex is 393 nm. The thermal stability study shows that the complex is stable at room temperature. The magnetic measurement result shows that intramolecular antiferromagnetic interaction is observed in complex.