Syntheses, Structures and Properties of Three Transition Metal Coordination Polymers Based on Semi-rigid 3-Pyridylnicotinamide and S/N-Containing Dicarboxylate Mixed Ligands

• Published in: Chemical research in Chinese universities 2014-10, Vol.30 (5), p.709-714
• Main Authors: Wang, Xiuli, Gong, Chunhua, Qu, Yun, Liu, Guocheng, Zhang, Juwen
• Format: Article
• Language: English
• Subjects: Analytical Chemistry; Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Inorganic Chemistry; Organic Chemistry; Physical Chemistry; 二羧酸; 半刚性; 单晶X射线衍射分析; 合成; 性能; 混合配体; 结构特征; 金属配位聚合物
• ISSN: 1005-9040; 2210-3171
• DOI: 10.1007/s40242-014-4128-5

Three new coordination complexes, [Co（L）（ADTZ）]·H2O（1）, [Cd（L）（ADTZ）]·H2O（2） and [Zn（L）（ADTZ）]·H2O（3）[L=3-pyridylnicotinamide, H2ADTZ=2,5-（s-acetic acid）dimercapto-1,3,4-thiadiazole], were synthesized under hydrothermal conditions. These complexes were structurally characterized by single-crystal X-ray diffraction analysis and further characterized by infrared spectroscopy（IR）, powder X-ray diffraction （PXRD） and thermogravimetric analysis（TGA）. Complexes 1-3 exhibit the similar 2D double-layer networks based on 1D [M-L], zigzag chains and 1D [M-ADTZ]2n double-chains with different distances between metal ions and with various conformations of ADTZ anions. In complexes 1 and 3, the 2D sheets are extended into a 3D supramolecular frameworks by hydrogen bonding interactions. The subtle effects of the central metal atoms on the structures of the title coordination polymers were discussed. The electrochemical properties of complex 1 and luminescent properties of complexes 2 and 3 were investigated. In addition, complexes 1-3 exhibit photocatalytic activity for dye methylene blue degradation under UV light and show good stability toward photoca- talysis.