Lanthanide Complexes of Polyacid Ligands derived from 2, 6-bis(pyrazol-1-yl)pyridine, pyrazine, and 6, 6?-bis(pyrazol-1-yl)-2, 2?-bipyridine: Synthesis and luminescence properties
作者:Juan Carlos Rodriguez-Ubis、Rosa Sedano、Gemma Barroso、Olga Juanes、Ernesto Brunet
DOI:10.1002/hlca.19970800108
日期:1997.2.10
The synthesis of three novel pyrazole-containing complexing acids, N,N,N′,N′-2, 6-bis[3-(aminomethyl)pyrazol-1-yl]-4-methoxypyridine}tetrakis(acetic acid)(1), N,N,N′,N′-2, 6-bis[3-(aminomethyl)pyrazol-1-yl]pyrazine}-tetrakis(acetic acid) (2), and N,N,N′,N′-6, 6′-bis[3-(aminomethyl)pyrazol-1-yl]-2, 2′-bipyridine}tetrakis(acetic acid) (3) is described. Ligands 1–3 formed stable complexes with EuIII
三种新型含吡唑的络合酸N,N,N',N '-2,6-双[3-(氨基甲基)吡唑-1-基] -4-甲氧基吡啶}四(乙酸)(1),N,N,N ',N '-2,6-双[3-(氨基甲基)吡唑-1-基]吡嗪}-四(乙酸)(2)和N,N,N ' ,描述了N '-6,6'-双[3-(氨基甲基)吡唑-1-基] -2,2'-联吡啶}四(乙酸)(3)。配体1-3在H 2中与Eu III,Tb III,Sm III和Dy III形成稳定的络合物测量了其相对发光率,三重态能量和发射衰减寿命的O。还确定了镧系元素离子的第一个配位域中的H 2 O分子数量。比较1-3的Eu III和Tb III配合物与母体三杂环N,N,N ',N '- 2,6-双[3-(氨基甲基)吡唑-1-基]吡啶的数据的比较}四(乙酸)表明,对吡嗪或2,2'-联吡啶的吡啶环进行了修饰,强烈改变了配合物的发光性能。的MeO换人中C(4)的1 保