title: Noncovalent secondary interactions in Co(II)Salen complexes: O2 binding and catalytic activity in cyclohexene oxygenation.
abstract: The O2 affinity of Co(II)Salen complexes 1-4 and their reactivity in cyclohexene oxygenation reactions of Co(II)Salen complexes 1-4 are modulated by noncovalent interactions such as hydrogen bonding and steric hindrance using a functionalized diamino bridge. Higher O2 affinity is observed in the case of efficient hydrogen-bonding interactions (complex 1), while increased steric hindrance (cis vs trans diamino bridge) around the Co-coordinated O2 is influencing the reactivity of the complexes.
authors.affiliation: Laboratory of Supramolecular Chemistry and Technology, MESA(+) Research Institute, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
authors.forename: Roberto
authors.initials: R
authors.lastname: Fiammengo
authors.forename: Christiaan M
authors.initials: CM
authors.lastname: Bruinink
authors.forename: Mercedes
authors.initials: M
authors.lastname: Crego-Calama
authors.forename: David N
authors.initials: DN
authors.lastname: Reinhoudt