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  Global Journal of Inorganic Chemistry. Volume 2, Issue 1 (2011) pp. 5-11
  Research Article
Syntheses, crystal structures and fluorescence of two H-bonded 3D architectures based on 1D 2,3-pyrazinedicarboxylate coordination polymers
  Ling Xuc, Xiu-Cheng Zhangb, Bing Liua,d,*  
a REQUIMTE & Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
b College of Science, Northeast Forestry University, 150040 Harbin, Heilongjiang, P. R. China
c Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Korea
d Department of Chemistry, University of Aveiro, CICECO, Campus Universitario de Santiago, 3810-193 Aveiro Portugal

  Two 1D 2,3-pyrazinedicarboxylate coordination polymers, [Cu(pzdc)(H2O)3]n·nH2O (1) and [Cd(Hpzdc)2]n·2nH2O (2) (H2pzdc = 2,3-pyrazinedicarboxylic acid) were synthesized using diffusion method. The (H)pzdc ligands adopt the same coordination mode to fabricate two kinds of different chains: battlement-like chain for 1 and crossing double one for 2. Through the linkage of hydrogen bondings formed among the water molecules and the chains, 3D supramolecular architectures are shaped. 1 and 2 exhibit fluorescent features (emissions at 472 for 1 and 425 nm for 2) which are assigned to LMCT and ππ* intra-ligand transitions respectively.
  Crystal structure; Fluorescence; Low-dimensional compound; 2,3-pyrazinedicarboxylic acid  

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