%0 Journal Article %T Cyclam-strapped porphyrins and their iron(III)-copper(II) complexes as models for the resting state of cytochrome c oxidase %+ Laboratoire de Synthèse et Electrosynthèse Organométalliques (LSEO) %A Boitrel, Bernard %A Bruno, Andrioletti %A Ricard, David %< avec comité de lecture %@ 1144-0546 %J New Journal of Chemistry %I Royal Society of Chemistry %V 23 %N 12 %P 1143-1150 %8 1999 %D 1999 %Z Chemical SciencesJournal articles %X The ESR study of two cyclam-strapped porphyrins in which, on one side, the cyclam is attached with a variable length linker to the porphyrin and, on the other side, a non-coordinating strap protects the iron from any intermolecular interaction, is reported. Variation of the linker length is made possible by the use of either a Michael reaction or a nucleophilic substitution, leading respectively to three or two carbon atom links. It is shown that in the case of the shortest link, the oxidized ironÈcopper complex exhibits a spin interaction. The distance between thetwo metal centers is evaluated to be around 4.5 Å, a value consistent with the one found in the natural enzyme. %G English %L hal-01469607 %U https://univ-rennes.hal.science/hal-01469607 %~ UNIV-BOURGOGNE %~ CNRS %~ TEST-UNIV-RENNES %~ UNIV-RENNES %~ TEST3-HALCNRS