Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (5): 709-714.doi: 10.1007/s40242-014-4128-5

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

WANG Xiuli, GONG Chunhua, QU Yun, LIU Guocheng, ZHANG Juwen   

  1. Liaoning Province Silicon Materials Engineering Technology Research Centre, Department of Chemistry, Bohai University, Jinzhou 121000, P. R. China
  • Received:2014-04-09 Revised:2014-06-04 Online:2014-10-01 Published:2014-06-16
  • Contact: WANG Xiuli E-mail:wangxiuli@bhu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.21171025), the Project for New Century Excellent Talents in University of China(No.NCET-09-0853), and the Program of Innovative Research Team in University of Liaoning Province of China(No.LT2012020).

Abstract:

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]n 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 photocatalysis.

Key words: Hydrothermal synthesis, Crystal structure, Dipyridylamide, S/N-Containing dicarboxylate, Photocatalysis