title: Transition-Metal Oxos as the Lewis Basic Component of Frustrated Lewis Pairs.
abstract: The reaction of oxorhenium complexes that incorporate diamidopyridine (DAP) ligands with B(C6F5)3 results in the formation of classical Lewis acid-base adducts. The adducts effectively catalyze the hydrogenation of a variety of unactivated olefins at 100 °C. Control reactions with these complexes or B(C6F5)3 alone did not yield any hydrogenated products under these conditions. Mechanistic studies suggest a frustrated Lewis pair is generated between the oxorhenium DAP complexes and B(C6F5)3, which is effective at olefin hydrogenation. Thus, we demonstrate for the first time that the incorporation of a transition-metal oxo in a frustrated Lewis pair can have a synergistic effect and results in enhanced catalytic activity.
authors.affiliation: Department of Chemistry, North Carolina State University , 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States.
authors.forename: Nikola S
authors.initials: NS
authors.lastname: Lambic
authors.affiliation: Department of Chemistry, North Carolina State University , 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States.
authors.forename: Roger D
authors.initials: RD
authors.lastname: Sommer
authors.affiliation: Department of Chemistry, North Carolina State University , 2620 Yarbrough Drive, Raleigh, North Carolina 27695-8204, United States.
authors.forename: Elon A
authors.initials: EA
authors.lastname: Ison