Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 36

Editor: Peter Gölitz, Deputy Editors: Neville Compton, Haymo Ross

Online ISSN: 1521-3773

Associated Title(s): Angewandte Chemie, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemistryOpen, ChemPhotoChem, ChemPlusChem, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 7/1994)

33_07/1994The cover picture shows in the foreground the oxygen-bridged binuclear iron(IV) complex μ-oxo-bis-[(octaethylcorrolato)iron(IV)] (N = green, O = blue, Fe = pink, ethyl substitutents have been omitted), which may bring about a renaissance of the metallocorroles. The fact that corroles stabilize metals in unusual oxidation states as trianionic ligands has now been proven by E. Vogel et al.—see pp. 731–735—with some iron(IV) corrole complexes, formed from the stable, diiron complex shown, which crystallizes as black rhombuses. The question mark in the background emphasizes the uncertainity associated with the unequivocal assignment of the oxidation state to the metal center in complexes with “non-innocent” ligands such as corroles.

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