title: X-ray spectroscopic and diffraction study of the structure of the active species in the Ni(II)-catalyzed polymerization of isocyanides.
abstract: The structure of the active complex in the Ni-catalyzed polymerization of isocyanides to give polyisocyanides is investigated. It is shown by X-ray absorption spectroscopy (XAS), including EXAFS (extended X-ray absorption fine structure) and XANES (X-ray absorption near edge structure), and single-crystal X-ray diffraction, to contain a carbene-like ligand. This is the first structural characterization of a crucial intermediate in the so-called merry-go-round mechanism for Ni-catalyzed isocyanide polymerization.
authors.affiliation: Institute for Molecules and Materials, University of Nijmegen, 1 Toernooiveld, 6525 ED Nijmegen, The Netherlands.
authors.forename: Gerald A
authors.initials: GA
authors.lastname: Metselaar
authors.forename: Erik
authors.initials: E
authors.lastname: Schwartz
authors.forename: René
authors.initials: R
authors.lastname: de Gelder
authors.forename: Martin C
authors.initials: MC
authors.lastname: Feiters
authors.forename: Serge
authors.initials: S
authors.lastname: Nikitenko
authors.forename: Grigory
authors.initials: G
authors.lastname: Smolentsev
authors.forename: Galina E
authors.initials: GE
authors.lastname: Yalovega
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Soldatov
authors.forename: Jeroen J L M
authors.initials: JJ
authors.lastname: Cornelissen
authors.forename: Alan E
authors.initials: AE
authors.lastname: Rowan
authors.forename: Roeland J M
authors.initials: RJ
authors.lastname: Nolte