A novel wavelike chain constructed from Wells–Dawson type polyoxoanions and mixed-ligand decorated transition metal complex cations [Ni(phen)(bbi)2]2+

A novel one-dimensional Wells–Dawson-based compound H2(bbi)0.5[Ni(phen)(bbi)2]2[P2W18O62] (phen = 1,10′-phenanthroline, bbi = 1,1′-(1,4-butanediyl)bis(imidazole)), has been prepared under the hydrothermal conditions and structurally characterized by elemental analysis, cyclic voltammetry, IR and XPS spectra and single-crystal X-ray diffraction. The title compound exhibits an interesting wavelike chain constructed from Dawson type polyoxoanion and mixed rigid and flexible ligands decorated [Ni(phen)(bbi)2]2+ cationic complex. It represents the first example of polyoxometalate that built from the rigid and flexible ligands at the same time.