The IR spectrum of the resulting material reveals that all OH groups are consumed (Figure ) and the observation of the same characteristic bands is consistent with a quantitative grafting of 1-Ni via this process and likely an identical grafting mechanism. To further corroborate the structure of the surface site, we turned to solid-state NMR spectroscopy. C-MAS SSNMR spectroscopy of 1-Ni/SiO2-700 (Figure .) confirmed that both the h 3 -allyl, and the amidine ligand are present in the grafted materials. In the C MAS SSNMR spectrum of 1-Ni/SiO2-700, the signal around 158 ppm corresponds to the quaternary carbon of the amidine, the signal around 105 ppm is assigned to the central carbon of the allyl ligand. The terminal carbon atoms of the allyl and the central carbon of the iso-propyl group are overlapped (ca. 30-60 ppm) -several signals are observed in this region due to the desymmetrization upon grafting.