摘要
水热条件下利用苯并咪唑-5-羧酸,1,4-对苯二甲酸和Cd(NO3)2·4H2O为反应物合成出了一个配位聚合物{[Cd(Hbic)(bdc)1/2]·H2O}n(1),并分别用元素分析,红外谱图,热重分析,X-射线粉末衍射和X-射线单晶衍射对其结构进行表征。结构分析表明该化合物为二维层状结构,其中每个独立的层都是由两种芳环羧酸配体连接链状的[Cd(COO)]n次级构筑单元所构成,有趣的是在二维层中还存在着笼状的空腔结构。邻近的二维层之间通过分子间氢键和π-π堆积作用进一步扩展为三维超分子结构。荧光谱图表明常温固态下配合物1发射绿色荧光,最大发射峰位于506 nm。
A new coordination polymer, {[Cd(Hbic)(bdc)1/2]·H2O}n (1), has been synthesized by the self-assembly of 1H-benzimidazole-5-carboxylic acid (Hgbie), 1,4-benzenedicarboxylie acid (H2bdc) and Cd(NO3)2 ·4H2O under hydrothermal conditions, and characterized by elemental analysis, IR, TGA, XRPD and sing/e-crystal X-ray diffraction analysis. Complex 1 shows a 2D layer-like structure formed by mixed aromatic carboxylic acid ligands bridging chain-like [Cd(COO)]n SBUs, in which there exists cage-like cavity.These 2D layers are extended into a 3D supramolecular framework by intermolecular hydrogen bonds and π-π packing interactions. The photoluminescense of complex 1 in the solid state at room temperature have been studied.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2014年第7期1629-1634,共6页
Chinese Journal of Inorganic Chemistry
基金
吉林省教育厅"十二五"科学技术研究(吉教科合字[2014]第559号)资助项目
关键词
水热合成
晶体结构
镉配合物
芳香羧酸配体
荧光性质
hydrothermal synthesis
crystal structure
Cd(Ⅱ) complex
aromatic carboxylate ligand
photoluminescent property