La(Ⅲ)、Eu(Ⅲ)、Tb(Ⅲ)与 HPMPPP 配合物的合成和表征

Studied on the Synthesis and Properties of HPMPPP Complexes with La(Ⅲ),Eu(Ⅲ) and Tb(Ⅲ)

合成了1-苯基-3-甲基-4-(β-苯甲酰基乙酰基)-吡唑酮-5的镧、铕、铽配合物.通过元素含量分析、IR 和UV-Vis 吸收光谱以及(?)H NMR 和^(13)C NMR 等对它们进行了研究.结果表明,配体的3个羰基只有其中2个参与稀土离子的络合.~1H NMR 的谱峰分裂显示了顺反异构的现象.

Complexes of 1-phenyl-3-methyl-4-(β-benzoylacetyl)-pyrazolone -5with La(Ⅲ),Eu(Ⅲ)and Tb(Ⅲ)were synthesized and characterized by elementalanalysis,IR,UV,~1H NMR and ^(13)C NMR.It is indicated that only two carbonylgroups among the three of the complexant coordinates with the RE cation.Thetrans-and cis-structural isomerisms were clarified by spectral peak splitting of^(?)H NMR.