A rare polyoxometalate based on mixed niobium-based polyoxoanions [GeNb18O54]14 − and [Nb3W3O19]5 −

A rare inorganic-organic hybrid polyoxometalate constructed from different Nb-based polyoxometalates {GeNb18O54} and {Nb3W3O19} has been created. The coexistence of these two polyoxometalate in the same structure is unknown and the {GeNb18O54} exhibits the first member of {XNb18O54} series with X = Ge.605