A novel extended architecture with 4(6).6(4) topology based on mixed-valence Wells-Dawson arsenotungstate and mixed-ligand Cu(I) units

作者：Tong Ruizhan; Ren Xiaoyu; Li Zuoxi; Liu Bin; Hu Huaiming; Xue Ganglin^*; Fu Feng; Wang Jiwu

来源：Journal of Solid State Chemistry, 2010, 183(9): 2027-2031.

DOI：10.1016/j.jssc.2010.07.004

• Polyoxometalates
• Arsenotungstate
• Hydrothermal synthesis
• Inorganic-organic hybrid
• Mixed-valence

A novel inorganic-organic hybrid compound based on mixed-valence Wells-Dawson arsenotungstate and mixed-ligand Cu(I) units. Cu-8(I)(imi)(4)(bpy)(6)(H2O)[(As2W2W13O62)-W-V-W-V-O-VI]center dot 2H(2)O (1) (bpy=4,4'-bipydine; imi=imidazole), has been hydrothermally synthesized and characterized by elemental analysis, IR spectroscopy, thermal gravimetric analysis, luminescent spectrum and single crystal X-ray diffraction. Single-crystal X-ray diffraction revealed that four terminal and three bridging oxygen atoms of the Wells-Dawson cluster are coordinated to Cu(I) ions and form an unprecedented hepta-supporting polyoxometalate. The functionalized arsenotungstates are further connected by two kinds of tridentate linkers, Imi-Cu-(bpy)-Cu-(bpy)- Cu-(bpy)-Cu-Imi and Imi-Cu-(bpy)-Cu-(bpy)-Cu-H2O, to construct a 3D framework with 4(6).6(4) topology. The hybrid material has an intense emission at about 397 nm.

• 出版日期2010-9
• 单位西北大学; 延安大学