A new supramolecular assembly composed of decatungstate polyanion and Cu/O/W heterometallic cluster

A new supramolecular assembly of [(CuL)2(WO4)2{CuL(H2O)}2][W10O32] · 8H2O (1) (L = 4′-(2-pyridyl)-2,2′:6′,2′-terpyridine) containing a decatungstate polyanion and a novel cationic Cu/O/W heterometallic cluster was successfully synthesized and characterized by single crystal X-ray diffraction and IR. The tungsten atoms adopt different coordination geometry in anion and cation, octahedral geometry (WO6) in decatungstate cluster and rare tetrahedral geometry (WO4) in cation cluster. During the hydrothermal process, the decomposition and reassembly based on [W6O19]2 − lead to the formation of [W10O32]4 − and Cu/O/W heterometallic cluster.