Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (8): 1496.

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Synthesis and Crystal Structure of Nickle 3,5-Pyridinedicarboxylates

JIN Qiang1, ZHAO Jiao2, SHI Xin1*   

  1. 1. Institute of Chemistry for Functionalized Materials, Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, China;
     2. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
  • Received:2010-02-01 Online:2010-08-10 Published:2010-08-10
  • Contact: SHI Xin. E-mail: xinshi@lnnu.edu.cn

Abstract:

Three new nickle 3,5-pyridinedicarboxylates coordination polymers, [Ni(3,5-Pydc)(H2O)4·H2O]n(1), [Ni2(3,5-Pydc)2(H2O)8·(H2O)2]n(2) and [Ni(3,5-Pydc)(H2O)2]n(3) were synthesized by hydrothermal method and characterized by single-crystal X-ray diffraction, FTIR and TGA. X-ray crystallography reveals that both complexes 1 and 2 are 1D zigzag chains, while complex 3 is a 2D layered network. In complex 1, 3,5-Pydc ligand links two different Ni(Ⅱ) into 1D zigzag chain. There are two independent 1D zigzag chains with same coordination mode in complex 2 and each zigzag chain is formed by 3,5-Pydc ligand connecting with Ni(Ⅱ). Complex 3 is a 2D network constructed by twenty-membered rings comprising three Ni(Ⅱ) and three 3,5-Pydc ligands. Furthermore, three compounds form 3D supramolecular frameworks through O—H…O hydrogen bonds among chains or layers. The guest water molecules are defined in supramolecular frameworks of complexes 1 and 2.

Key words: Coordination polymer; 3,5-Pyridinedicarboxylic acid; Crystal structure

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