稀土元素容易与含氧、氮、硫、硒等的有机化合物生成稳定的固体络合物。在这些络合物中除有机配位体外,往往同时还含有溶剂(水或醇)分子。本文研究了(?)、铈与丙酮酸络合物的合成,并通过红外光谱证实所合成化合物的组成。经研究发现,这种化合物同稀土与乙酰丙酮或β—二酮的络合物相似,其组成为Ln·L3·nx(n=0—4, Rare earth elements and oxygen, nitrogen, sulfur, selenium and other organic compounds to generate a stable solid complex. In addition to organic ligands, these complexes often contain both solvent (water or alcohol) molecules. In this paper, the synthesis of (?), Cerium and pyruvic acid complexes was studied, and the composition of the synthesized compounds was confirmed by infrared spectroscopy. The study found that this compound with rare earth and acetylacetone or β-diketone complex similar to the composition of Ln · L3 · nx (n = 0-4,