New synthetic route for organic polyoxometallic clusters: synthetic and structural investigations on the first dumb-bell shaped polyoxozirconium hydroxide with the [Zr-9(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)}(2)Zr(mu-O)(4)].2C(7)H(8) (2; Cp = C5Me5) involving the treatment of the Bronsted acidic organozirconium hydroxide [(Cp Zr)(6)(mu(4)-O)(mu-O)(4)(mu-OH) (8)].2C(7)H(8) (1) with organozirconium compounds.