A new 3-fold interpenetration of diamond-like network constructed from polyoxometalate building blocks

A new complex based on Keggin polyoxometalate building blocks, [Cu2(bpy)2(Hbpy)(H2O)](PW12O40) (1) (bpy = 4,4′-bipyridine), has been hydrothermally synthesized and characterized by elemental analyses, IR, TG and X-ray single crystal diffraction. The X-ray structure analysis reveals that complex 1 exhibits an unprecedented 3-fold interpenetration of diamond-like network in the polyoxometalate chemistry.