不同合成介质下的钐三元稀土配合物的合成及表征

从合成介质角度考察钐有机配合物的发光性能。通过元素分析、差热-热重、红外光谱等表征,确定了不同合成介质(甲醇、乙醇、正丙醇、正丁醇)下钐-间苯二甲酸-邻菲罗啉三元配合物A、B、C、D的组成和可能的配位结构;结果表明:间苯二甲酸的两个羧基氧和邻菲罗啉的氮原子及合成介质均与稀土离子配位。不同合成介质下配合物的荧光强度和荧光寿命值顺序如下:A>B>C>D;2K~300K的变温磁化率曲线表明,四种配合物的磁学性质均相似,表现为顺磁性。

Synthesis and characterization of ternary complexes of Sm (Ⅲ) with m-phenyl benzoic acid and phenanthrolin in different media

A series of rare earth complexes were synthesized in methanol, alcohol, n-propanol,n-butanol by using Sm(III) as central ion, m-phenyl benzoic acid as the ligand, phen as the second ligand for the first time. Probable coordination structure and composition of the rare earth complexes were determined by using IR spectra and elemental analysis.The results show that the oxygen atom from m-phenyl benzoic acid and nitrogen atoms from phen coordinate to the rare earth ions in the complexes. The results fluorescence spectra show that fluorescence intensity of complexes in different media is reduced with the sequence of methanol, alcohol, n-propanol,n-butanol. The lifetime were measured by the fitted lifetime decay curves. The sequence of lifetime is in accordance with the intensity. Susceptibility curves showed that most of them were paramagnetic complexes.