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Nanjing, China

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. Source


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. Source


Wu G.,Chu Zhou University | Wang X.-F.,Xiao Zhuang University | Guo X.L.,Chu Zhou University | Yu L.,Chu Zhou University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2010

Two isostructural complexes [Ca(hssal)(H2O)2] n (1) and [Sr(hssal)(H2O)2]n (2) (hssal2-= 5-sulfosalicylate anion) are obtained by using the ligand 5-sulfosalicylic acid and alkaline earth metal salts under hydrothermal conditions. Their structures were determined by single-crystal X-ray diffraction analysis and further characterized by elemental analyses and IR spectroscopy. Complexes 1 and 2 have a two-dimensional network structure, in which the Ca II and SrII ions have an octacoordinate distorted square antiprismatic arrangement. Each subsalicylate anion acts as a μ4-bridging ligand, whereas the carboxylate group adopts a chelating coordination. Luminescence properties and thermal stabilities of complexes 1 and 2 were investigated. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA. Source


Wu G.,Chu Zhou University | Wu G.,Nanjing University | Zhang S.-Q.,Chu Zhou University | Wang X.-F.,Xiao Zhuang University | Liu G.-X.,Xiao Zhuang University
Synthesis and Reactivity in Inorganic, Metal-Organic and Nano-Metal Chemistry | Year: 2014

The title complex [Ca2(ma)2(H2O) 2] (1), where ma2- is maleate anion, was obtained by reaction of maleic anhydride ligand and CaCO3 under hydrothemal process. Its structure was determined by single-crystal X-ray diffraction analyses, and further characterized by elemental analyses and IR spectra. Complex 1 is three-dimensional network structure, in which the Ca(II) center takes seven-coordinated distorted pentgonal bipyramidal geometry. Each ma 2- anion acts as a 4μ-bridge ligand to form 3D framework, in which one carboxylate group adopts a 3- η2:η2 fashion, while the other takes a μ2-η1:η1 coordinating model. Its solid-state fluorescent property was investigated in this paper. Furthermore, we describe a simple method for the production of micro-crystalline calcite CaCO3 particles based on direct calcination of complex 1 as a precursor at moderately elevated temperature. Copyright © 2014 Taylor & Francis Group, LLC. Source


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. Source

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