通过乙二胺四乙酸二酐与4-氨基水杨酸的酰化反应得到乙二胺N,N-二(4-乙酰胺基水杨酸)-二乙酸(H4L);在室温下,H4L与GdCl3、EuCl3在水溶液中进行配位组装反应,得到两个新的稀土金属配合物(Gd-L、Eu-L)。通过FTIR、元素分析、UV、TG-DTA等测试手段对稀土金属配合物的组成进行了初步确定与表征,得到两个配合物中金属离子与配体之比均为1:1,可表示为RE(HL)-3H2O(RE3+=Gd3+,Eu3+)。 Ethylenediamine N, N-bis (4-acetamidosalicylic acid) -diacetic acid (H4L) was obtained by acylation of ethylenediaminetetraacetic acid dianhydride with 4-aminosalicylic acid; H4L With GdCl3, EuCl3 in aqueous solution for coordination reaction, to obtain two new rare earth metal complexes (Gd-L, Eu-L). The composition of the rare earth metal complexes was initially determined and characterized by FTIR, elemental analysis, UV, TG-DTA and other methods. The results showed that the ratio of metal ions to ligand in the two complexes was 1: 1, which could be expressed as RE (HL) -3H2O (RE3 + = Gd3 +, Eu3 +).