通过三茂基镧系化合物Cp_3Ln(Cp=C_5H_5;Ln=Sm,Dy,Ho)与8-羟基喹啉反应(HL),合成了3种新的镧系金属有机化合物,通式为Cp_2LnL(Ln=Sm,Dy,Ho)。经元素分析、红外光谱、X光电子能谱、质谱及分子量测定,推断化合物具有二聚体结构,分子内存在通过喹啉氮原子和氧原子与金属配位而形成的五元螯合环。对化合物的热稳定性进行了研究和比较,发现化合物Cp_2SmL对热不稳定,在180℃以上分解为Cp_3Sm和SmL_3。 Three novel lanthanide metallo-organic compounds were synthesized by the reaction of trityl lanthanide Cp_3Ln (Cp = C_5H_5; Ln = Sm, Dy, Ho) with 8-hydroxyquinoline and the general formula was Cp_2LnL (Ln = Sm, Dy, Ho). The results of elemental analysis, IR, XPS, MS and molecular weight suggest that the compound has a dimeric structure. There exists a five-membered chelate ring in the molecule which is coordinated to the metal through the quinoline nitrogen and oxygen atoms. The thermal stability of the compounds were studied and compared, and it was found that the compound Cp_2SmL was unstable to heat and decomposed into Cp_3Sm and SmL_3 above 180 ℃.