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Articles by Jingxin Meng
Total Records ( 2 ) for Jingxin Meng
  Jingxin Meng , Xinlong Wang , Ying Ma , Enbo Wang and Xinxin Xu
  Two new polyoxotungstates with dafo and 4,4`-bipy ligands, [Ag(dafo)2]2{[Ag(4,4`-bipy)]2SiW12O40} (1) and [Cd2(dafo)4(4, 4`-bipy)(H2O)2](dafo) SiW12O40 (2) (dafo = 4, 5-diazafluoren-9-one, 4,4`-bipy = 4,4`-bipyridine), have been hydrothermally synthesized and characterized by elemental analyses, IR, TG and single crystal X-ray diffraction. Compound 1 consists of a one-dimensional (1D) chain constructed from [Ag(4,4`-bipy)]+ cations. With the connection of [Ag(4,4`-bipy)]+ cations and α-[SiW12O40]4- anions, two-dimensional (2D) structure was built. Because of the π-π stacking interactions between pyridyl rings of 4,4`-bipy from adjacent chains, three-dimensional (3D) structure was generated. Furthermore, the C-H ... O weak interaction between [Ag(dafo)2]24+ and polytungstate made the structure more stable. Like 1, compound 2 is a three-dimensional (3D) supramolecular compound constructed from a transition-metal complex fragment [Cd2(dafo)4(4,4`-bipy)(H2O)2]4+, SiW12O404- and free dafo through C-H ... O weak interactions. To our best knowledge, it is the first time that saturated Keggin-type polyoxotungstates interact with dafo and 4,4`-bipy at the same time.
  Yan Zhong , Hai Fu , Jingxin Meng and Enbo Wang
  Two organic-inorganic hybrid materials built from copper-glycin complexes and paradodecatungstates, Na6[{Cu(gly)(H2O)}]2[{Cu(H2O)}(H2W12O42)] ⋅ 21H2O (1) and Na{Na(H2O)6}{Na(H2O)4}3[{Cu(gly)2}]2{H5(H2W12O42)} ⋅ 8.5H2O (gly = glycin) (2), have been synthesized in aqueous solution and characterized by IR, UV, TG, elemental analysis, electrochemistry, and single-crystal X-ray analyses. In 1, [H2W12O42]10- building block connects two neighboring clusters with [Cu(H2O)]2+ groups to produce an infinite 1-D chain; then these chains are linked through [Cu(gly)(H2O)]+ groups to form a 2-D layer structure, which is further joined by Na+ to form a 3-D network. In 2, [H2W12O42]10- decorated by two [Cu(gly)2] moieties connects four adjacent clusters with six Na+ into a 2-D layer. In addition, luminescence and photocatalysis properties of these compounds have been investigated.
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