| Abstract: Reactions of the tri-olefinic tri-pyridyl ligand 1,3,5-tri-4-pyridyl-1,2-ethenylbenzene (tpeb) with four metal nitrates M(NO3)2 (M=Co, Ni, Zn, Cd) and various carboxylic acids including 3,5-dibromobenzoic acid (3,5-HDBB), 2,5-thiophenedicarboxylic acid (2,5-H2TDC), 2,5-furandicarboxylic acid (2,5-H2FDC) and 2,5-dibromoterephthalic acid (2,5-H2DBTP) gave rise to six coordination polymers,namely [Zn(tpeb)(3,5-DBB)2]n (1), [Co2(tpeb)2(2,5-TDC)2]n (2), [Co2(tpeb)2(2,5-FDC)2]n (3), [Co(tpeb)(2,5-DBTP)]n (4), [Ni(tpeb)(2,5-DBTP)]n (5) and [Cd(tpeb)0.5(2,5-DBTP)]n (6). Complexes 1~6 were characterized by elemental analysis, infrared spectrum (IR), thermogravimetric analysis (TGA), powder X-ray diffraction (PXRD) and single crystal X-ray diffraction. Complexes 1~6 show rich structure varieties from one-dimensional (1D) to three-dimensional (3D). Compound 1 has a 1D zigzag chain structure in which the [Zn(3,5-DBB)2] units are interconnected by tpeb ligands. Complexes 2 and 3 contain a similar two-dimensional (2D) double-layer network assembled from 1D ladder chains of [Co(tpeb)]n bridged by 2,5-TDC or 2,5-FDC. Complexes 4 and 5 hold a 3D framework constructed by bridging 1D chains of [M(2,5-DBTP)]n (M=Co, Ni) with tpeb ligands. Compound 6 contains 2D [Cd(2,5-DBTP)]n networks, which are interlinked by tpeb bridges, forming a unique 3D framework. Complexes 1~6 have good thermal stability, and exhibit various fluorescence emissions in the solid state. |
| 田千,张建国,倪春燕,杨战永,姚志刚,张敏杰,郎建平.含1，3，5-三-((4-吡啶)-1，2-乙烯基)苯的配位聚合物的合成、结构及性质[J].无机化学学报,2020,36(6):1063-1071. |
