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ABSTRACT: Five new heterometallic coordination polymers, {[LnCu2K(pydc)4(H2O)9]·H2O}n [Ln = La (1), Ln = Pr (2), H2pydc = pyridine-2,5-dicarboxylic acid], {[Ln2Cu(pydc)4(H2O)8]·H2O}n [Ln = Sm (3), Ln = Eu (4), Ln = Tb (5)], have been synthesized under hydrothermal conditions and characterized by elemental analysis, IR, thermogravimetric analysis, and single-crystal X-ray diffraction. X-ray structural analysis revealed that complexes 1 and 2 are the first Ln/Cu/K structures containing Cu(II) sandwiched in the interlayer regions of the two La/K planes alternately arranged along the b-axis. In complexes 3−5, two distinct types of building blocks, Ln(pydc)(H2O)4 and Cu(pydc)2, are linked together by pydc ligands to form a two-dimensional net structure. The magnetic properties of 1 and 2 and the luminescence properties of 3−5 have been investigated.
01/2010;
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Chinese Journal of Chemistry 11/2008; 26(11):2133 - 2136. · 0.75 Impact Factor
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ABSTRACT: [Cd(phen)2(male)(H2O)]·9.5H2O (1) has been synthesized by the reaction of Cd(NO3)2 with phen and male (phen=1,10-phenanthroline, H2male=maleic acid) in a mixture solvent of ethanol and distilled water. The complex was characterized by elemental analysis, infrared spectrum and thermal gravimetric analyses. The crystal structure was determined by X-ray single-crystal diffraction. In 1, a novel 1D water chain containing water (H2O)20 cluster was formed. Further hydrogen bonding interaction between the water chain and [Cd(phen)2(male)(H2O)] constructs a unique metal-water 2D framework.
Chinese Journal of Chemistry 10/2008; 26(10):1843 - 1847. · 0.75 Impact Factor
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ABSTRACT: [Cd2(phen)2(DPZDA)2(H2O)2] · 8H2O (1) and [Zn(phen)(DPZDA)(H2O)] · 2H2O (2) have been synthesized by reaction of Cd(NO3)2/Zn(NO3)2 with phen and DPZDA (where phen = 1,10-phenanthroline, H2DPZDA = 3,5-dimethyl-2,6-pyrazinedicarboxylic acid) in aqueous ethanol solution. Elemental analysis, IR spectra, thermal analyses and X-ray single crystal diffraction were carried out to determine the composition and crystal structure of 1 and 2. In 1, a 2D supramolecular network containing a novel metal-water decamer were formed by hydrogen bonds. In 2, a 2D supramolecular structure was constructed from hydrogen bonds and π·· · π interactions. Moreover, 1 and 2 displayed photoluminescent properties in the blue range at room temperature.
Journal of Coordination Chemistry. 06/2008; 61(12):1839-1848.
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ABSTRACT: The novel Pd(II) complex, [Pd(2)(micro-bzta)(4)].1.5DMSO (where bzta=benzothiazole-2-thiolate) has been synthesized and structurally characterized by element analysis, IR and single-crystal X-ray diffractometry. In the binuclear complex, two palladium(II) are bridged by four deprotonated benzothiazole-2-thialate in a head to tail disposition and the distance of the two Pd(II) is 2.747 A. Three-dimensional structure of the complex was constructed though S...S (3.339 A) weak interaction and pi...pi stack. The binding of the title complex with fish sperm DNA (FS-DNA) has been investigated by absorption and fluorescence spectra. The results indicate that the complex bind to FS-DNA in an intercalative mode and the intrinsic binding constant K of the title complex with FS-DNA is about 1.2 x 10(4)M(-1). Gel electrophoresis assay demonstrates the ability of the complex to cleave the pUC19 plasmid DNA.
Journal of Inorganic Biochemistry 11/2007; 101(10):1404-9. · 3.35 Impact Factor
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ABSTRACT: {{Five new heterometallic coordination polymers, [LnCu(2)K(pydc)(4)(H(2)O)(9)]center dot H(2)O(n) [Ln = La (1)
CRYSTAL GROWTH & DESIGN. 10(3):1059-1067.
