以2-氯苯甲酸、5,5′-二甲基-2,2′-联吡啶构筑的双核铽配合物的晶体结构和荧光性质(英文)

A Dinuclear Terbium(Ⅲ) Complex Based on 2-Chlorobenzoate and 5,5′-Dimethyl-2,2′-bipyridine Ligands: Crystal Structure and Luminescence

水热条件下采用Tb(NO3)3.6H2O,2-氯苯甲酸和5,5′-二甲基-2,2-联吡啶作为反应物合成出一个双核铽金属配合物Tb2(2-cb)4(dmpy)2(NO3)2(2-cb=2-氯苯甲酸,dmpy=5,5′-二甲基-2,2′-联吡啶)(1),并分别用元素分析,红外光谱图,差热分析和X-射线单晶衍射等表征了该结构。晶体结构分析结果表明:化合物1为双核铽髥配合物,通过分子间的C-H…O氢键作用,双核分子进一步被连接成二维平面结构。热稳定性表明化合物1能够稳定到280℃;荧光分析表明常温固态下配合物1发射绿色荧光,荧光寿命为431.8μs。

The reaction of 2-chlorobenzoic acid, 5, 5＇-dimethyl-2,2＇-bipyridine and Tb （NO3）3·6H2O under hydrothermal condition gave one new dinuclear terbium（Ⅲ） complex, Tb2（2-cb）4（dmpy）2 （NO3）2 （1） （2-cb =2- chlorobenzoate, dmpy=5, 5＇-dimethyl-2, 2＇-bipyridine）, which has been characterized by elemental analysis, IR, TGA and single-crystal X-ray diffraction. Complex 1 is a dinuclear terbium（Ⅲ） complex, which is further extended to a 2D layered network by C-H…O hydrogen bonding interactions. The results of thermal analysis indicate that complex 1 is quite stable up to 280℃. 1 emits the intensely green characteristic luminescence of Tb3＋ ion at room temperature, with lifetime of up to 431.8 Ⅲs. CCDC： 865399.