title: Redox-active ligands and organic radical chemistry.
abstract: Knowledge about bonding in diiminepyridine (L) halide, alkyl, and dinitrogen complexes of the metals iron, cobalt, and nickel is summarized, and two new examples are added to the set: L(1)Ni(Me) and L(1)Ni(N(2)). Reactivity of these types of complexes is discussed in terms of organic radical chemistry. New C-C couplings with L(2)CoAr complexes are described and proposed to involve halide abstraction and radical coupling. Calculations support the high tendency of the diiminepyridine ligand to accept an electron coming from a metal-carbon bond and so facilitate loss of a radical.
authors.affiliation: Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.
authors.forename: Di
authors.initials: D
authors.lastname: Zhu
authors.forename: Indira
authors.initials: I
authors.lastname: Thapa
authors.forename: Ilia
authors.initials: I
authors.lastname: Korobkov
authors.forename: Sandro
authors.initials: S
authors.lastname: Gambarotta
authors.forename: Peter H M
authors.initials: PH
authors.lastname: Budzelaar