稀土配合物[Ln(C3H7NO2)2(C3H4N2)(H2O)](ClO4)3(Ln=Eu,Dy)的合成、表征与热分析

合成了稀土高氯酸盐与咪唑、DL-α-丙氨酸的两种配合物晶体．经傅立叶变换红外光谱(FT—IR)、元素分析和化学分析测定后确定其组成为[Ln(C3H7NO2)2(C3H4N2)(H2O)](ClO4)3(In=Eu，Dy)．用差示扫描量热法(DSC)在高纯流动N2气氛下测定了两种配合物的热分解数据，它们的热分解过程都是由两个放热峰组成，两个配合物开始分解的温度分别为497．2K，491．8K，峰顶温度分别为564．4K和613．2K，544．4K和615．1K，热分解焓值分别为2026kJ／mol和961．2kJ／mol，2596kJ／mol和1097kJ／mol．测定结果表明配合物有较高的热稳定性．

Synthesis, Characterization and Thermal Analysis of Rare-earth Complexes[Ln(C3H7NO2)2(C3H4N2)(H2O)](ClO4)3(Ln=Eu, Dy)

The crystal of two complexes of rare - earth perchlorate with imidazole and DL-a-Alanine were synthesized and characterized. Their components were determined to be [Ln(C3H7NO2)2(C3H4N2) (H2O)] (ClO4)3 (Ln=Eu,Dy) by the FT-IR, element analysis and chemical analysis. The data of the thermal decomposition of two complexes were determined in flow atmosphere of high purity nitrogen by differential scanning calorimetry (DSC) , the thermal decomposition course of them were composed of two exothermic peak, the temperature of them begin break were 497. 2 K and 491. 8 K, the temperature of peak top of them were 564. 4 K and 613. 2 K, 544.4 K and 615. 1 K, the enthalpy values of thermal decomposition were 2026 kJ/mol and 961. 2 kJ/mol,2596kJ/mol and 1 097 kJ/mol by DSC determined,respectively, result show complexes have higher thermal stability.