Supramolecular assembly based on Keggin cluster and basketlike cage

A novel supramolecular compound based on the Keggin cluster and basketlike cage (C10H10N2)12(PMoVI12O40)2(Sr ⊂ P6Mo3VMo15VIO73)2·9H2O (1), has been hydrothermally synthesized and characterized by elemental analysis, IR, TG, XPS, UV and single-crystal X-ray diffraction. In compound 1, the basketlike polyanion uses its surface oxygen atoms to attract nine basket cages and five Keggin clusters via strong supramolecular interactions. Meanwhile, each of Keggin cluster is surrounded by its neighboring five basket cages in the same mode to form a 3D supramolecular framework with chambers, and 4,4′-bipy organic molecules are located in the chambers to stabilize the whole structure. The electrochemical and electrocatalysis behavior of 1-CPE have been studied in detail.