Noncovalent secondary interactions in Co(II)Salen complexes: O2 binding and catalytic activity in cyclohexene oxygenation

Roberto Fiammengo; Christiaan M Bruinink; Mercedes Crego-Calama; David N Reinhoudt

doi:10.1021/jo026118a

Noncovalent secondary interactions in Co(II)Salen complexes: O2 binding and catalytic activity in cyclohexene oxygenation

J Org Chem. 2002 Nov 29;67(24):8552-7. doi: 10.1021/jo026118a.

Authors

Roberto Fiammengo¹, Christiaan M Bruinink, Mercedes Crego-Calama, David N Reinhoudt

Affiliation

¹ Laboratory of Supramolecular Chemistry and Technology, MESA(+) Research Institute, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.

PMID: 12444638
DOI: 10.1021/jo026118a

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.