Metal complexes bearing α-diimine ligands have recently shown promise in catalysis. Anhydrous iron dihalide complexes dppBIANFeBr2 and dppNNNFeBr2 (dpp = 2,6-diisopropylphenyl; BIAN = bis(imino)acenaphthene; NNN = N-2-picolyl-bis(imino)acenaphthene) were prepared. Reduction of dppBIANFeBr2 with LiCH2SiMe3 followed by subsequent catalytic hydrosilylation of unsaturated hydrocarbons demonstrated nearly quantitative yields as determined by 1H Nuclear Magnetic Resonance (NMR) Spectroscopy. Preliminary work on the activation of dppNNNFeBr2 showed promising hydrosilylation results by Gas Chromatography (GC), while synthesis of related ligand classes to achieve higher activity of the iron catalyst is ongoing.

Hydrosilylation activity of iron complexes supported by conjugated α-diimine ligands

251st National Meeting (2016)

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