Unusual reactivity of molecular oxygen with pi-allylnickel(N-heterocyclic carbene) chloride complexes.
One-pot preparation and characterization of the first reported nickel(II) complexes containing a single imidazol-2-ylidene ligand are reported. Subsequent treatment of these complexes with molecular oxygen at room temperature results in rapid formation of a mu-hydroxo dimer and alpha,beta-unsaturated carbonyl compounds. Mechanistic investigations indicate that this reaction proceeds via reversible oxygen binding followed by rate-limiting decomposition of the resulting metal-oxygen species.
Dible
Benjamin R
BR
Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, UT 84112-8500, USA.
Sigman
Matthew S
MS
D018360:Crystallography, X-Ray; D006571:Heterocyclic Compounds / Q000737:chemistry; D006838:Hydrocarbons; D007700:Kinetics; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*
D006571:Heterocyclic Compounds; D006838:Hydrocarbons; D009942:Organometallic Compounds; C030011:carbene; D009532:Nickel; D008697:Methane; D010100:Oxygen