A novel 1D polyoxometallate-based coordination polymer [{Pr(DMSO)6(H2O)}(PMo12O40)·CH3CN]n: properties, crystal structure and characterization

A novel compound, [{Pr(DMSO)6(H2O)}(PMo12O40)·CH3CN]n, has been synthesized and characterized by IR and single crystal X-ray structural analysis. It forms an one-dimensional zigzag chain built from alternating polyanions and cationic units through Mo–Ot–Pr–Ot– Mo links in the crystal. The results of the single crystal X-ray diffraction analyses and IR are agreement and both show the metal cation units are coordinately bonded to the Keggin cluster. The low temperature ESR spectrum indicates thermal electron delocalization occurs among the Mo atoms in the compound. The result of CV shows that the title compound undergoes five two-electron reversible reductions and that [PMo12O40]32 anions are active centre for electrochemical redox in the solutions, while matched cations have small effect on electrochemical redox. q 2004 Elsevier B.V. All rights reserved.