Well-defined mono(η~3-allyl)nickel complex ≡ MONi(η~3-C_3H_5) (M = Si or Al) grafted onto silica or alumina: a molecularly dispersed nickel precursor for syntheses of supported small size nickel nanoparticles

摘要

Preparing evenly-dispersed small size nickel nanoparticles over inert oxides remains a challenge today. In this context, a versatile method to prepare supported small size nickel nanoparticles (ca. 1-3 nm) with narrow size distribution via a surface organometallic chemistry (SOMC) route is described. The grafted mono(η~3-allyl)nickel complexes ≡ MONi(η~3-C_3H_5) (M = Si or Al) as precursors are synthesized and fully characterized by elemental analysis, FDR spectroscopy and paramagnetic solid-state NMR.