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Baicheng, China

Fu Y.,Baicheng Teachers College
Journal of Coordination Chemistry | Year: 2010

A new linear-chain structure based on heptamolybdates with the linkage of {Ce(H2O)5} units, (C6H13N 4)2(H3O)[Ce(H2O)5Mo 7O24] 4H2O (1) has been synthesized and characterized by single crystal X-ray diffraction, IR spectroscopy, elemental analysis, and thermogravimetric analysis. Magnetic studies show strong spin-orbital coupling interactions and/or antiferromagnetic interactions within Ce(III) centers. © 2010 Taylor & Francis.


Cao T.,Northeast Normal University | Cao T.,Baicheng Teachers College | Li Y.,Northeast Normal University | Wang C.,Northeast Normal University | And 2 more authors.
Langmuir | Year: 2011

Heterostructured SrTiO3/TiO2 nanofibers were fabricated by in situ hydrothermal method using TiO2 nanofibers as both template and reactant. The as-fabricated heterostructures composite included SrTiO3 nanocubes or nanoparticles assembled uniformly on the surface of TiO2 nanofibers. Compared with the pure TiO2 nanofibers, SrTiO3/TiO2 nanofibers exhibited enhanced photocatalytic activity in the decomposition of Rhodamine B (RB) under ultraviolet light. The enhanced photocatalytic activity of SrTiO 3/TiO2 nanofibers could be attributed to the improvement of charge separation derived from the coupling effect of TiO2 and SrTiO3 nanocomposite. © 2011 American Chemical Society.


Zhang C.-H.,Northeast Normal University | Zhang C.-H.,Baicheng Teachers College | Zhang C.-J.,Northeast Normal University | Chen Y.-G.,Northeast Normal University
Solid State Sciences | Year: 2011

Two new compounds based on Anderson-type polyoxometalates and Zr 4+/Ce3+/1,2-diaminoethanetetraacetate complexes: Na 3[ZrEDTA(H2O)2]2[Cr(OH) 6Mo6O18]·10H2O (1) and [Ce3(HEDTA)2(H2O)9][Cr(OH) 6Mo6O18]·13H2O (2) (EDTA = 1,2-diaminoethanetetraacetate), have been conventionally synthesized and characterized by elemental analysis, IR, TG and single crystal X-ray diffraction. In 1, each trinuclear Na+ cluster connects two [ZrEDTA(H2O)2] fragments forming {Na 3[ZrEDTA(H2O)2]2}3+ cations and at the same time further link four [Cr(OH)6Mo 6O18]3- anions to result in a 2D sheet. The hydrogen bonds between [ZrEDTA(H2O)2] fragments belonging to different sheets are the main force of constructing 3D architecture. In 2, the interaction of Ce and octa-dentated EDTA ligands creates a 2D [Ce 3(HEDTA)2(H2O)9]3+ coordination polymer sheets including big 12-numbered Ce rings and 4-numbered Ce rings. The polymer sheets interact with [Cr(OH)6Mo6O 18]3- anions by H-bonds forming a 3D supramolecular framework. © 2011 Elsevier Masson SAS. All rights reserved.


Yang X.-D.,Northeast Normal University | Zhang C.-H.,Northeast Normal University | Zhang C.-H.,Baicheng Teachers College | Wang D.-P.,Northeast Normal University | And 2 more authors.
Inorganic Chemistry Communications | Year: 2010

Two new compounds based on [H2W12O40] 6- (W12) clusters and Ln-organic complexes, [Ln 3(Hdipic)(dipic)(H2O)13(H2W 12O40)]•13H2O Ln = Sm (1), Gd (2), (dipic = pyridine-2,6-dicarboxylate anion) have been synthesized and characterized by element analysis, IR spectrometry and thermogravimetric analysis. Single-crystal X-ray diffraction analyses reveal that compounds 1 and 2 are isostructural. In 1 and 2 four Ln3+ ions lie in a plane and form a centrosymmetric regular rhomblike ring {Ln4(dipic)2(Hdipic) 2(H2O)12}6+(Sm4-ring) through the ligands. The covalent combination of W12 subunits as a tetradentate ligand to Ln4-rings from two sides creates a polymeric anion, {[H2W12O40]2[Ln 4(dipic)2(Hdipic)2(H2O) 12]}6-, and then Ln1 ions connect these anions leading to the 2D layers. The magnetic measurements indicate that in 1 and 2 there exist very weak antiferromagnetic interactions. © 2010 Elsevier B.V. All rights reserved.


Zhang C.-H.,Northeast Normal University | Zhang C.-H.,Baicheng Teachers College | Zhang C.-J.,Northeast Normal University | Chen Y.-G.,Northeast Normal University | Liu S.-X.,Northeast Normal University
Inorganic Chemistry Communications | Year: 2011

A new three-dimensional (3D) hybrid compound [Cu4(EGTA) 2(H2O)4Cu2(H2O) 8][SiW12O40]•14H2O (1), [EGTA = ethyleneglycol-bis-(2-aminoethylether)-tetra acetic acid], was conventionally synthesized and characterized by elemental analysis, IR, TG, and single crystal X-ray diffraction. In 1, the square inorganic layers formed by the coordination of tungstosilicate anions to copper ions are supported by Cu4(EGTA) 2 metallamacrocyclic cations, giving a unique 3D framework with α-Po topology. Additionally, luminescent and magnetic properties of 1 are investigated in the solid state. © 2011 Elsevier B.V. All rights reserved.

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