有机磷配位体与稀土元素形成的络合物已有不少报道。它们作为络合萃取剂,在稀土元素的分离方面已有广泛应用。文献[3]指出,异辛基膦酸单酯与稀土离子作用,应形成组成为LnL_3的络合物。本文研究了铈组元素与异辛基膦酸单酯(P-507)及二(1-甲基庚基)磷酸(P-215)络合物的合成,并借助于元素分析和红外光谱,确定了所合成化合物的组成,并研究了络合物的热分解过程。 Organophosphorus ligand complexes with rare earth complexes have been reported. As complexing agent, they have been widely used in the separation of rare earth elements. Literature [3] pointed out that isooctyl phosphonic acid monoester with rare earth ions, should form a composition of LnL_3 complexes. In this paper, the synthesis of complexes of cerium with isooctylphosphonic acid monoester (P-507) and bis (1-methylheptyl) phosphate (P-215) was studied. By means of elemental analysis and infrared spectroscopy, The composition of the synthesized compounds was determined and the thermal decomposition process of the complexes was studied.