Abstract
A new polyoxometalate (POM)-based inorganic–organic hybrid, [Ag4(SiMo12O40)(HBTA)8]·8H2O (1), constructed from the Keggin-type polyoxomolybdates and benzotriazole (HBTA) ligands linked by two dinuclear silver(I) clusters has been obtained and characterized by single-crystal X-ray diffraction and IR spectrum. In 1, a pair of parallel Ag2(HBTA)4 units fixed to the central [SiMo12O40]4− stick out like a barbell to support the whole structure. These clusters are extended into the wave-like layers by the strong π–π stacking interactions and hydrogen bonds. The 2D layers are further extended into a 3D supramolecular structure by means of hydrogen bonds (C4–H4⋯O10) between the nitrogen atoms of the HBTA ligands and the oxygen atoms of [SiMo12O40]4− anions. Luminescence property of 1 in CH3CN solution has been investigated. In addition, 1-CPE possesses good electrocatalytic activity toward the reduction of KNO2, H2O2 and KBrO3.
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