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Wu G.,Chu Zhou University | Wu G.,Nanjing University | Feng J.-H.,Chu Zhou University | Wang X.-F.,Xiao Zhuang University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2012

A coordination polymer [Ba 12(btc) 8(H 2O) 23] (1) was obtained by self-assembly of the corresponding metal carbonate with benzene-1, 2, 3-tricarboxylic acid ligand (H 3btc), and its structure was determined by single-crystal X-ray diffraction studies. The results revealed that complex 1 has a three dimensional structure. In 1, the btc 3- anions adopt four different conformation and coordination modes. Bridging btc 3- anions and μ 2-bridging water molecules connect Ba II ions to generate a two dimensional layer. Further, μ 2-bridging coordinated water molecules connect the Ba II ions of neighboring layers to form a three dimensional structure. Additionally, the luminescent property and thermal stability of 1 were investigated. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Wu G.,Chu Zhou University | Li Z.-C.,Chu Zhou University | Wang X.-F.,Nanjing Xiaozhuang University
Journal of the Chilean Chemical Society | Year: 2015

A new complex [Cd(btca)0.5(H2O)3] (1) (H4btca: 1,2,4,5-benzenetetracarboxlyic acid) has been synthesized and characterized by single crystal X-ray diffraction studies, elemental analysis and FT-IR. In compound 1, Cd(II) center atoms coordinate to three ligand btca4- anions and three water molecules with a six-coordinated distorted octahedral geometry. Four carboxyl groups of btca4- adopt μ2-η2:η0 and μ1-η1:η0 two different coordination modes. The whole anion btca4-acts as a hexadentate bridge to connect adjacent Cd(II) atoms, resulting in 2D layer structure. Further, these two-dimensional layers are linked together by O-H···O to give rise to three-dimensional structure. Thermal stability and luminescent property of 1 are investigated. CdO micro-crystalline particles are then produced by calcination of compound 1 at 580 oC. The obtained CdO is characterized by XRD and SEM analyses.


Wu G.,Chu Zhou University | Wang X.-F.,Xiao Zhuang University | Guo L.,Chu Zhou University | Li H.-H.,Chu Zhou University
Journal of Chemical Crystallography | Year: 2011

Two new complexes [Zn(sal)2(tpt)]•H2O(1), [Cd(sal)2(tpt)(H2O)]•H2O(2), have been obtained through ligands tpt and Hsal, where Hsal is salicylic acid and tpt is 2,4,6-tripyridyl-1,3,5-triazine, reacting with Zn(II) and Cd(II) salts. Their structures are fully characterized by IR spectroscopy, elemental analysis, single crystal X-ray diffraction. In complex 1, Zn(II) is coordinated by three N atoms and two O atom with a distorted square pyramidal coordination geometry. In 2, Each Cd(II) atom is seven-coordinated with a distorted pentagonal bipyramidal coordination geometry. The structural differences between two complexes show the influence of the coordinating orientation of metal ions. These two mononuclear complexes are further extended into three-dimensional structure via π-π, C-H•••π and hydrogen bonding interactions. The solid state luminescent properties of complex 1, 2 are also reported. © 2011 Springer Science+Business Media, LLC.


Wu G.,Chu Zhou University | Wu G.,Nanjing University | Yin F.-J.,Chu Zhou University | Yin F.-J.,China Institute of Technology | And 2 more authors.
Journal of Chemical Crystallography | Year: 2012

Complex [Ba(pdc)(H 2O)] (1), (H 2pdc: 2,3-pyrazinedicarboxylic acid) has been synthesized and characterized by single crystal X-ray diffraction studies and FT-IR. Structural determination reveals that there is only a crystallographically independent barium(II) center. The coordination geometry of Ba1 is a distorted bicapped tetragonal antiprism. The two carboxylate groups of pdc 2- adopt μ 3- η 2: η 2 and μ 4-η 2: η 2 coordination modes, respectively. Whole pdc 2- acts as a μ 6-bridge to link barium(II) centers to generate 2D network. Thermal stability and luminescent properties of complex 1 are investigated. © Springer Science+Business Media, LLC 2012.


Wang X.-F.,Xiao Zhuang University | Yu L.,Chu Zhou University | Wei H.,Chu Zhou University | Wu G.,Chu Zhou University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2011

A coordination polymer [Ba(pcmb)(H2O)2.5] (1) was obtained by self-assembly of the corresponding metal carbonate with a flexible ligand, p-(carboxyl-methyloxy)-benzenecarboxylic acid (H2pcmb), and its structure was determined by single-crystal X-ray diffraction studies. The result revealed that complex 1 has a three-dimensional structure, in which the barium(II) atom takes a distorted eight-coordinate bicapped anti-prism arrangement. The pcmb2- anion acts as a μ4-bridge ligand, in which carboxylate groups adopt monodentate and μ3- ν2:ν1-bridging two different coordination models to generate a three-dimensional network structure. The luminescence property and thermal stability of 1 were investigated. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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