A new paratungstate-A-based organic-inorganic hybrid compound: Synthesis, structure and photocatalytic property of [Co(en)(3)](2)[H2W7O24]center dot 8H(2)O

作者：Yan, Gang; Wang, Xin; Ma, Yuanyuan; Cheng, Xin; Wang, Yonghui^*; Li, Yangguang

来源：Solid State Sciences, 2013, 17: 146-150.

DOI：10.1016/j.solidstatesciences.2012.11.018

• Polyoxometalate
• Paratungstate-A
• Hybrid
• Hydrothermal synthesis
• Photocatalysis

A new paratungstate-A-based organic-inorganic hybrid compound with the chemical formula of [Co(en)(3)](2)[H2W7O24]center dot 8H(2)O (en = ethylenediamine) (1) has been hydrothermally synthesized and structurally characterized by the elemental analysis, IR, TG, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic space group P2(1)/c with a = 17.216(3) angstrom, b = 14.986(3) angstrom, c = 23.088(8) angstrom, beta = 128.151(2)degrees, V = 4684.2 angstrom(3), Z = 1, R-1 = 0.0484, and wR(2) = 0.1087. The structure of 1 consists of the [H2W7O24](4-) building blocks and [Co(en)(3)](2+) metal-organic cationic moieties, which are packed together via the electrostatic forces and extensive hydrogen-bonding interactions to form a three-dimensional supramolecular framework. Interestingly, compound 1 represents the first structurally-defined hybrid compound based on the metastable paratungstate-A polyoxoanions and metal-organic units. The degradation of Rhodamine-B (RhB) under UV irradiation with 1 as the heterogeneous photocatalyst has been investigated, showing a good photocatalytic property of 1 for RhB degradation.

• 出版日期2013-3
• 单位东北师范大学