新型稀土螯合剂6,6′-{N,N′,N,N′-[二(2,2′-联吡啶-6,6′-二甲基)]二氨甲基}-2,2′-联吡啶-4-羧酸-Eu3+的合成

以2-氯-6-甲基异烟酸甲酯为起始原料,经偶联、酯化、取代和水解等反应合成了新型稀土螯合剂6,6'-{N,N',N,N'-[二(2,2'-联吡啶-6,6'-二甲基)]二氨甲基}-2,2'-联吡啶-4-羧酸-Eu³⁺（C6）,其结构和性能经FL, IR, MS(ESI)和元素分析表征。结果表明：C6的激发峰位于255~340 nm,最大激发波长为290 nm,发射峰为612 nm,荧光寿命为801 µs。     

Crystal structure of (2,2'-bipyridine-N,N)(2,2',2'-triaminotriethylamine-N,N',N',N')nickel(II) diperchlorate.

An X-ray structure determination shows that the Ni(II) ion is a distorted six-coordinated octahedron by four nitrogen atoms of the tetradentate tren ligand constituting the equatorial square base, and by two nitrogen atoms of the bidentate bpy ligand in a cis position. The two six-membered rings of bpy are coplanar and almost pararell. The tetradentate ligand consists of three five-membered chelate rings in gauche coformations. The Ni-N(tren) bond lengths of this complex are almost equivalent to the reported values.