Chu Zhou University

Chuzhou, China

Chu Zhou University

Chuzhou, China
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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.


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 | 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.


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.


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.


Wang X.F.,Nanjing University | Qing C.S.,Chu Zhou University | Bao Q.,Chu Zhou University | Wu G.,Chu Zhou University
Journal of Coordination Chemistry | Year: 2016

A new Dy(III) complex, [KDy(sbtc)(H2O)2]·2H2O (1) (KH3sbtc: 5-sulfo-1,2,4benzenetetricarboxylic acid potassium salt), has been synthesized by solvothermal reaction of Dy2O3 and KH3sbtc, and characterized by single crystal X-ray diffraction studies, elemental analysis, and FTIR. Single crystal X-ray diffraction reveals that 1 has a 3-D architecture, and there is only one crystallographically independent Dy(III) and K(I) in 1. The coordination geometry of Dy(III) is a distorted monocapped tetragonal antiprism and K(I) is also a distorted monocapped tetragonal antiprism. The whole sbtc4− is a μ8-bridge linking four different Dy(III) cations and four different K(I) cations, giving a 3-D network structure. Thermal stability and solid luminescence of 1 were also investigated. © 2016 Informa UK Limited, trading as Taylor & Francis Group


Guo L.,Chu Zhou University | Wu G.,Chu Zhou University | Li H.-H.,Chu Zhou University
Journal of Chemical Crystallography | Year: 2012

Abstract [Pr(Hbtca)(H 2O)] (1), [Eu(Hbtca)(H 2O)] (2), [Gd(Hbtca)(H 2O)] (3) (H4btca: 1, 2, 4, 5-benzenetetracarboxlyic acid) have been synthesized and characterized by single crystal X-ray diffraction studies, elemental analysis and FT-IR. Structural determination reveals that these three complexes are isostructural. In compounds, center atoms coordinate to one ligand (Hbtca) 3- and one water molecule with nine-coordinated distorted monocapped anti-square prism geometry. Four carboxyl groups of (Hbtca) 3- adopt μ2-η 1:η 2 and μ1-η 1:η 1 two different coordination modes. The whole ligand (Hbtca) 3- acts as a l6-bridge to connect six different rare earth M(III) ions to generate a 3D network. Thermal stability of three complexes and luminescent property of 2 are investigated. © Springer Science+Business Media, LLC 2011.


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 | Wu G.,Nanjing University | Zhang S.-Q.,Chu Zhou University | Guo L.,Chu Zhou University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2013

The self-assembly of 1, 0-phenanthroline (phen) and 1,2,4,5- benzenetetracarboxylic acid(H4btc) with Ca(NO3) 2 gives rise to a two-dimensional network structure coordination polymer, [Ca(phen)(btc)0.5(H2O)] (1), which was characterized by elemental analysis, IR spectroscopy, and single-crystal X-ray diffraction. This compound is monoclinic, space group C2/c, with Z = 8 in a unit cell with dimensions a = 21.744(3) Å, b = 10.0151(12) Å, c = 14.7122(17) Å, β = 110.2850(10)°. The structure contains one crystallographic unique CaII atom, one phen coordinated molecule and a half of btc4- anion. The phen molecule acts as a didentate ligand chelating with a CaII atom, whereas the btc4- anion acts as a μ6-bridge linking six different CaII atoms to form a two-dimensional network with (4, 4) topological structure. The three dimensional stacking structures are formed by C-H-O hydrogen bonding and π-π interaction. The thermal stability and fluorescent properties of 1 were investigated. Calcite particles are produced by calcination of compound 1 at 580 °C. The obtained calcite was characterized by XRD and SEM analyses. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.


Wu G.,Chu Zhou University | Yin F.-J.,Huaihai Institute of Technology | Wei H.,Chu Zhou University | Liu Z.-F.,Chu Zhou University | Wang X.-F.,Nanjing University
Zeitschrift fur Anorganische und Allgemeine Chemie | Year: 2011

The complex [Ba3(sip)2(H2O) 9]·H2O (1) (NaH2sip = 5-sulfoisophthalic acid sodium) was synthesized and characterized by single-crystal X-ray diffraction. Structural determination reveals that the asymmetric unit in 1 contains two crystallographically independent BaII atoms. The Ba1 atom is eight-coordinate with distorted monocapped pentagonal bipyramidal arrangement, whereas the Ba2 atom is ten-coordinated with bicapped tetragonal prismatic arrangement. The two carboxylate groups of sip3- adopt different coordination modes, μ2-η1: η1-bridging, and μ2-η2: η1-bridging. The sulfonate group coordinates to three different BaII atoms in a tridentate μ3 mode to generate a ladder-like one-dimensional chain. The chains are connected by μ2-η1:η1-bridging carboxylate groups to form a wave-like two-dimensional network, which are further linked by sip3- anions to generate a three-dimensional structure. The thermal stability and luminescence properties of complex 1 were also investigated. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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