title: Mechanistic implications of an asymmetric intermediate in catalytic C-C coupling by a dinuclear nickel complex.
abstract: An asymmetric nickel-nickel bonded intermediate was isolated in the reaction of biphenylene with bis(1,5-cyclooctadiene)nickel and i-Pr(3)P, where three of the four carbons are σ-bonded to one nickel. Mechanistic investigations support reactivity as a formal Ni(III)-Ni(I) complex; reductive elimination of cis-disposed Ni-C bonds from a single nickel centre directly provides a dinuclear Ni(I)-Ni(I) complex, a reaction relevant to dinuclear catalysis.
authors.affiliation: Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON, Canada.
authors.forename: Robert
authors.initials: R
authors.lastname: Beck
authors.forename: Samuel A
authors.initials: SA
authors.lastname: Johnson