Incorporation of an intact dimeric Zr12 oxo cluster from a molecular precursor in a new zirconium metal-organic framework

Abstract

Two zirconium–organic frameworks were synthesized by exchanging the acetate ligands in [Zr12O8(OH)8(CH3COO)24] with polydentate linkers. Partial substitution of acetate groups by a phosphine based linker yielded a new porous framework with this unique dimeric Zr12 cluster unit as molecular building block. More exhaustive substitution of acetate resulted in cleavage of the Zr12 unit and formation of UiO-67.