Abstract
A new vanadium-centered tungstovanadate, [Cu2I (ppz)4][HVW12O40]·8H2O (1) {ppz = 3-(pyrid-4-yl) pyrazole}, has been hydrothermally synthesized, and characterized by IR, single-crystal X-ray diffraction as well as powder X-ray diffraction. Structural analysis reveals that compound 1 as a 3D supramolecular architecture consists of [HVW12O40]2− anions and [Cu2I(ppz)4]2+ cations. Compound 1 represents the first example of Keggin type vanadium-centered tungstovanadate modified by Copper-azole. Furthermore, compound 1 shows high and stable electrocatalytic activity for reduction of NO2− ions.
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