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Abstract: Three novel polymers, {[Cd(m-bdc)(L)]·H2O} n (1), [Co(m-bdc)(L)0.5(H2O)] n (2) and [Zn5(L)2(p-bdc)5(H2O)] n (3) based on 1,1′-bis(pyridin-3-ylmethyl)-2,2′-biimidazole (L) ligand and benzenedicarboxylate isomers, have been prepared and structurally characterized. Compound 1 exhibits a 2D architecture with (42·6)(42·67·8) topology, which is synthesized by L and 1,3-benzenedicarboxylate (m-bdc) ligands. Compound 2 is constructed from 1D chains that are linked by L ligands extending a 2D (4,4) grid. Compound 3 is a 3D framework with (43)(46·618·84) topology, which is composed of trinuclear clusters and five-coordinated metal centers joined through 1,4-benzenedicarboxylate (p-bdc) and L ligands. Moreover, the fluorescent properties of L ligand, compounds 1 and 3 are also determined. [Copyright &y& Elsevier]

Abstract: A novel three-dimensional (3D) polymer [Cd2(Hbiim)4] n (H2biim=2,2′-biimidazole) 1 was obtained through hydrothermal reaction and characterized by single crystal X-ray diffraction, and the fluorescent property was also determined. Compound 1 crystallizes in a monoclinic chiral space group P21 and contains two types of helical chains. Hbiim− partially deprotonated of H2biim exhibits two different coordination modes, which contributes greatly to the formation of the 3D chiral framework. Compound 1 exhibits blue fluorescence at 488nm in the solid-state upon excitation at 430nm. [Copyright &y& Elsevier]

Abstract: Two new lead-carboxylate complexes based on nicotinic acid N-oxide ligand, [Pb(NNO)(FA)0.5] (1) (HNNO=nicotinic acid N-oxide, FA=fumaric acid) and [Pb2(NNO)(BTC)] (2) (H3BTC=1,3,5-benzenetricarboxylic acid) were hydrothermally synthesized and characterized by the elemental analyses, IR spectra and single crystal X-ray diffraction. Significant phosphorescent properties of two compounds were observed at room temperature. [Copyright &y& Elsevier]