| Coordination polymer is one of the most vigorous subdivisions in coordination chemistry nowadays. With its fascinating structure and specific functionality, coordination polymer is catching more and more notice of scientists all around the world. In this paper, one novel supermolecule (Ni(6,6'-Hdcbp)2·4H2O(1)) and three novel coordination polymers (Co2(4,4'-H dcbp)4(H2O)2·5H2O(2),Co(4,4'-dcbp)(H2 O)2(3),Zn(4,4'-dcbp)(H2O)3·3H2O(4)) were synthesized through hydrothermal method. All of the above compounds exhibit fantastic structure. Compound 1 presents a 3D supermolecule net work via hydrogen bonds. And there is a rare "hydrogen-bond cage" which made 1 from a 0D molecule to a 1D supermolecule chain. Compound 2 presents a 1D zigzag chain and 4 presents 1D linear chain, both 2 and 4 exhibit 3D frameworks via hydrogen bonds. However 3 shows a 3D network via coordination bonds. Four novel coordination compounds (Eu (4,4'-dcbp)(OH)·2H2O (5), Tb(4,4'-dcbp)(4,4'-Hdcbp)·10H2O (6),EuZn(4,4'-dcbp)2(OH)·5H2O (7),Tb2Zn(4,4'-dcbp)4·10.5H2O (8)) were synthesized by conventional method and characterized by elemental analysis, FTIR, TG-DTA and fluorescence spectroscopy. The result shows that, both fluorescence intensity and color purity of the rare-earth compound can be enhanced by introducing Zn2+.
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