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合成了新β双酮试剂1-对甲苯基-3-甲基-4-(α-呋喃甲酰基)吡唑啉酮-5(HL)及其稀土Nd(Ⅲ)、Sm(Ⅲ)、Gd(Ⅲ)配合物。根据元素分析、摩尔电导结果推出配合物的组成为[ML3(HL)].H2O。通过红外光谱、紫外-可见光谱和差热-热重分析对配合物进行了配位结构与热稳定性的研究。结果表明配体采取烯醇式羟基O及羰基O原子两种配位方式,中心离子的配位数为8。配合物摩尔电导值表明它们都是非电解质。配体的分解温度为209.6℃,配合物的分解温度升至225℃左右,热稳定性增强。
The new β-diketone reagent 1-p-tolyl-3-methyl-4- (α-furoyl) pyrazolone-5 (HL) and its rare earth Nd (Ⅲ), Sm (III) complex. According to the elemental analysis, the composition of the complex introduced by molar conductance is [ML3 (HL)]. H2O. The coordination structure and thermal stability of the complexes were investigated by FT-IR, UV-Vis and TG-DTA. The results show that the ligand adopts two coordination modes of enol hydroxyl O and carbonyl O atoms, and the coordinate number of central ion is 8. The molar conductance of the complexes indicates that they are all non-electrolytes. The decomposition temperature of the ligand is 209.6 ℃, the decomposition temperature of the complex is about 225 ℃, and the thermal stability is enhanced.