Aluminum Alkyl-Mediated Route to Novel N,N,O-Chelates for Five-Coordinate Iron(II) Chloride Complexes: Synthesis, Structures, and Ethylene Polymerization Studies

Two five-coordinate iron(II) chloride complexes bearing 2-imine-6-(methyl alcohol)pyridine chelates have been prepared via an aluminum-mediated methyl migration route from the corresponding 2-acetyl-6-iminopyridine. Both iron complexes display moderate activity for ethylene polymerization on treatment with excess methylaluminoxane, affording highly linear polymers along with some oligomeric products.