No doubt: The high‐quality crystal structure of [Cu(TMG3tren)(O2)]SbF6 (see picture) presents the first unambiguous characterization of a bioinorganic compound in which a dioxygen molecule coordinates end‐on to a CuI ion. This species, which is best described as a superoxo copper(II) complex, serves as a model complex for initially formed Cu–O2 adducts present in a variety of active sites of copper enzymes.
Zweifel ausgeräumt: Die hochaufgelöste Struktur des Komplexes [Cu(TMG3tren)(O2)]SbF6 im Kristall (siehe Bild) ermöglicht erstmalig die zweifelsfreie Charakterisierung einer End‐on‐Koordination von Disauerstoff am zentralen Kupferion einer bioanorganischen Verbindung. Diese Spezies, die sich am besten als End‐on‐Superoxo‐Kupfer(II)‐Komplex beschreiben lässt, eignet sich als Modellkomplex für die Bildung des primären Cu‐O2‐Addukts, wie es im aktiven Zentrum vieler Kupferenzyme auftritt.
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