基于柔性三齿配体的镉(Ⅱ)和锌(Ⅱ)配合物的合成、结构和荧光性质（英文）

Syntheses, Crystal Structures and Fluorescence of Cadmium(Ⅱ) and Zinc(Ⅱ) Complexes Based on Flexible Tripodal Ligands

柔性三齿配体1,3,5-tris(imidazol-1-ylmethyl)-2,4,6-trimethylbenzene(TITMB)和1,3,5-tris(triazol-1-ylmethyl)-2,4,6-trimethylbenzene(TTTMB)与金属镉(Ⅱ)和锌(Ⅱ)分别反应,合成了配合物{[Cd_3(SO_4)_4(TITMB)_2(H_2O)_4][Cd(H_2O)_6]·2CH_3OH}_n(1)和{[Zn(TTTMB)(HCOO)_2]·CH_3OH}_n(2)。配合物1和2均采用单晶X射线衍射、红外光谱、固态荧光、热重分析和元素分析进行了表征。在配合物1中,存在着由硫酸根离子和Cd(Ⅱ)构成的一维链,其再与配体TITMB配位形成二维层状结构,[Cd(H_2O)_6]^(2+)位于层与层中间平衡电荷。配合物2具有典型的63二维蜂窝状拓扑结构。配合物1和2中的二维层状结构,均通过氢键作用延伸成为三维结构。配合物1和2均具有较高的热稳定性,并且在固态下释放蓝色荧光。

Two new coordination polymers, {[Cd3（SO4）4（TITMB）2（H2O）4] [Cd（H2O）6]·2CH3OH}n （1） and {[Zn（TTTMB） （HCOO）2]·CH3OH}n （2）, based on the flexible tripodal ligands 1,3,5-tris（imidazol-1-ylmethyl）-2,4,6-trimethylbenzene （TITMB） and 1,3,5-tris（triazol-1-ylmethyl）-2,4,6-trimethylbenzene （TTTMB）, have been synthesized and character-ized by single-crystal XRD analyses, IR spectra, solid state photoluminescence studies, thermogravimetric analyses, and elemental analyses. Single-crystal X-ray diffraction reveals that both complexes 1 and 2 are two-dimensional layers, and extended to three-dimensional structure by hydrogen bonds. In complex 1, inorganic chains constructed by SO42- and Cd（Ⅱ） are linked by ligand TITMB to the 2D networks, where the[Cd（H2O）6]2＋ units locate in the cavity between two adjacent 2D layers by hydrogen bonds to neutralize the charge. Complex 2 owns typical 63 2D topological networks. The thermal stability and photoluminescence property were also studied. Both complexes show high thermal stabilities and display blue fluorescent emissions in the solid state at room temperature.