New synthetic route for organic polyoxometallic clusters: synthetic and structural investigations on the first dumb-bell shaped polyoxozirconium hydroxide with the [Zr9((mu)5-O)2((mu)3-O)4((mu)-O)4((mu)-OH)8] core structure

A new route for organic polyoxometallic clusters describes the first dumb-bell-like organic polyoxozirconium hydroxide [{(Cp*Zr)4((mu)5-O)((mu)3-O)2 ((mu)-OH)4}2Zr((mu)-O)4]·2C7H8(2; Cp*= C5Me5) involving the treatment of the Br?nsted acidic organozirconium hydroxide [(Cp*Zr)6((mu)4-O)((mu)-O)4((mu)OH)8]·2C7H8(1) with organozirconium compounds.