合成了十二种稀土-8-羟基喹啉(Ox)和四种β-二酮分别形成的三元固态络合物,并测定了其红外光谱。在形成的三元络合物中羰基伸缩频率明显向低频位移且依HTTA、Hpmbp、HAA和DBM的顺序减小。络合物的M-O伸缩频率出现于420-400cm~(-1)。三元络合物羰基频率降低的程度不及二元大。测得三元络合物在乙醇溶液中的组成比为Ln~(3+):β-二酮:Qx=1:4:1。 The ternary complex formed by twelve kinds of rare earth-8-hydroxyquinoline (Ox) and four kinds of β-diketone was synthesized and its infrared spectra were measured. The carbonyl stretching frequency of the ternary complex formed obviously shifted to low frequency and decreased in the order of HTTA, Hpmbp, HAA and DBM. The M-O stretching frequency of complex appeared in 420-400cm -1. The degree of carbonyl reduction of ternary complexes is less than that of binary. The composition ratio of ternary complex in ethanol solution was measured as Ln ~ (3 +): β-diketone: Qx = 1: 4: 1.