1996•Chemistry LettersRequires access

Synthesis of a Donor-Stabilized Silyl(silylene)iron Complex. Direct Observation of 1,3-Methyl Migration from Silyl to Silylene Ligands

Keiji Ueno, Kaori Nakano, Hiroshi Ogino

Abstract

Abstract Photolysis of Cp*Fe(CO)2SiMe2SiMe3 (Cp* = η-C5Me5) in the presence of HMPA (HMPA = (Me2N)3PO) afforded a donor-stabilized silyl(silylene)iron complex, Cp*(OC)Fe(=SiMe2·HMPA)SiMe3, almost quantitatively. Variable temperature 1H NMR investigation for solutions of the trimethylsilyl(dimethylsilylene)iron complex allowed the direct observation of 1,3-methyl migration from the silyl ligand to the silylene ligand. It is proposed that 1,3-migration may be a general phenomenon which prevails among compounds with RnE–M=E′Rm, arrangement.

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Key concepts: Silylene, Chemistry, Silylation, Photochemistry, Medicinal chemistry, Combinatorial chemistry, Organic chemistry, Silicon