稀土冠醚配合物的研究 Ⅺ.稀土(Ⅲ)硝酸盐与戊二酰双(苯并-15-冠-5)配合物的合成和性质研究

Studies on Rare Earth Coordination Compounds with Crown Ether——XI. Studies on the Coordination Compounds of Pentanedioyl-bis (B-15-C-5) with Rare Earth Nitrates

本工作合成了十五个新的镧系、钇的硝酸盐和戊二酰双(苯并-15-冠-5)的配合物,并进行了元素分析、紫外光谱、红外光谱、激光拉曼光谱、差热和热重等性质研究,对这一系列稀土配合物的性质作了比较。

This paper reports the synthesis and characterization of 15 new complexes of pentanedioyl-bis (4'-benzo-15-crown-5) (PDB) with rare earth nitrates. Although differenar molar ratio of metal and ligand are used, the composition of the obtained complexes is fixed one, except the complex of PDB with neodymium nitrate. According to elemental analysis, the formulae of the complexes are: Ln_2·PDB·(NO_3)_6· 6H_2O(Ln=La, Ce, Pr, Nd); Ln·PDB·(NO_3)_3·3H_2O (Ln=Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y). The molar absorption coefficient of K(λ_(max) 274.5nm) and B(λ_(max) 302.6nm) UV absorption bands of the complexes of PDB witn lanthanide display the tetrad effcet fiom La to Lu.