Well-defined azazirconacyclopropane complexes supported on silica structurally determined by 2D NMR comparative elucidationt

摘要

Grafting of Zr(NMe_2)_4 on mesoporous silica SBA-15 afforded selectively well-defined surface species =SiOZr(NMe_2)(η_2NMeCH_2). 2D solid-state NMR (~1H-~(13)C HETCOR, Multiple Quantum) experiments have shown a unique structural rearrangement occurring on the immobilised zirconium bis methylamido ligand.