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

Grafting of Zr(NMe2)(4) on mesoporous silica SBA-15 afforded selectively well-defined surface species SiOZr(NMe2)(eta 2NMeCH2). 2D solid-state NMR (H-1-C-13 HETCOR, Multiple Quantum) experiments have shown a unique structural rearrangement occurring on the immobilised zirconium bis methylamido ligand.