Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 23

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. 18/2002

18/2002The cover picture shows the newest member of an “elite” club of aromatic molecules. The platinabenzene, in which a benzene methine (CH) unit has been replaced by an isoelectronic platinum fragment, completes the series of metalla-aromatics containing third row, Group VIII metals (Os, Ir, Pt). Previously excluded, the molecule gains admittance to this select club because it exhibits properties similar to other six-membered ring heteroaromatic compounds (e.g., pyridine), such as ring planarity, delocalized bonding, and downfield shifts in the 1H NMR spectrum. The platinabenzene shares a feature unique for the third period transition metals in that it requires no further stabilization by coordination to an additional metal center. More on the structure and properties of this molecule can be found in the communication by Haley et al. on p. 3470 ff.

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