以1-萘乙酸、5,5′-二甲基-2,2′-联吡啶构筑的双核钐配合物的晶体结构和荧光性质(英文)

Synthesis, Structure and Properties of a Samarium(Ⅲ) Complex Based on 1-Naphthaleneacetate and 5,5′-Dimethyl-2,2′-Bipyridine Ligands

水热条件下采用Sm(NO3)3.6H2O,1-萘乙酸和5,5'-二甲基-2,2'-联吡啶作为反应物合成出一个双核钐金属配合物Sm2(1-npac)6(dmpy)2.(H2O)3(1)(1-npac=1-萘乙酸,dmpy=5,5′-二甲基-2,2′-联吡啶),并分别用元素分析、红外光谱、差热分析、X-射线粉末衍射,紫外-可见光谱和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为双核钐髥配合物,通过分子间的氢键作用以及C-H…π和π…π的堆积作用,双核分子进一步被连接成三维超分子结构。荧光分析表明常温固态下配合物1发射橙色荧光,荧光寿命为0.87μs(598 nm)。

A complex Smffl-npac）6 （dmpy）2（H20）3 （1）, （1-npac=l-naphthaleneacetate, dmpy=5,5＇-dimethyl-2,2＇- bipyridine） has been hydrothermally synthesized and characterized by elemental analysis, IR, TGA, powder X-ray diffraction, UV-Vis and single-crystal X-ray diffraction. Structural determination reveals that the samarium ions are bridged by two bidentate and two terdentate carboxylato groups to give centrosymmetric dimers with Sm..-Sm separation of 0.3925 （2） nm, which is further extended to a 3D supramolecular structure by hydrogen bonds, C-π and π ... πr stacking interactions. Solid-state 1 emits the intensive orange luminescence of Sm3＋ ion with fluorescence lifetime of 0.87 us （598 nm） at room temperature. CCDC： 898378.