title: Cobalt-carbene complex with single-bond character: intermediate for the cobalt complex-catalyzed cyclopropanation.
abstract: It is generally considered that metal-carbene carbon bonds in carbene complexes for cyclopropanation should be double-bonded; however, the theoretical and FT-IR analyses revealed that the cobalt-carbene carbon bond of the 3-oxobutylideneaminato or the salen-cobalt-carbene complexes was characterized as a single bond.
authors.affiliation: Department of Chemistry, Keio University, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan.
authors.forename: Taketo
authors.initials: T
authors.lastname: Ikeno
authors.forename: Izumi
authors.initials: I
authors.lastname: Iwakura
authors.forename: Tohru
authors.initials: T
authors.lastname: Yamada