Supramolecular control of an organic radical coupled to a metal ion embedded at the entrance of a hydrophobic cavity

Abstract : A novel N3ArO-calix[6]arene-based system is presented. It allows the formation of an aryloxy radical bound to a metal ion (CuII or ZnII) that presents a free coordination site in a concave cavity. Its oxidative activity appears highly controlled by the supramolecular system hence providing a good model for radical enzymes such as Galactose oxidase. © 2003 The Royal Society of Chemistry.