Ln(NO_3)_3·6H_2O与水杨醛缩酪氨酸席夫碱配合物的合成与表征

SYNTHESIS AND CHARACTERIZATION OF SCHIFF-BASE COMPLEXES DERIVED FROM SALICYLALDEHYDE-L-TYROSINE AND Ln(NO_3)_3·6H_2O

摘要: 合成了Ln(Ⅲ)(Ln=Gd,Dy,Tm,Ho,Sm)与水杨醛缩 L 酪氨酸的5种配合物,通过元素分析、红外光谱、紫外光谱、摩尔电导和热重分析,得到了配合物的组成为Ln(C16H14NO4)(H2O)3(NO3)(CH3CH2OH)(NO3),研究了Dy配合物的热分解反应动力学机理。

Abstract: Five lanthanide complexes are synthesized from Ln(NO3)3·6H2O(Ln=Sm,Gd,Dy,Ho,Tm) and a schiff base,2-(2-hydroxyphenyl)imino-3-(4-hydroxyphenyl)-propanic acid.The latter is derived from salicylaldehyde and L-tyrosine.These complexes are characterized with element analysis,infrared spectroscopy,ultraviolet spectroscopy,molar conductivity measurements,thermogravimetric analysis),and differential thermal analysis.The stoichiometry is deduced to be \(C2H5OH)(NO3),and the possible structure is proposed.The thermal decomposition reaction kinetics of Dy complex is studied by thermogravimetry.