Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 35

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. 18/1994)

33_18/1994The cover picture shows a complex composed of 16 Pb2+ ions (in blue) and two 16-fold deprotonated γ-cyclodextrin tori (O atoms in red), in which each alkoxide O atom bridges two Pb atoms. An eight-point star of P2+ ions results; the diolate residues face each other, and the inner Pb2+ ions have 4 + 2 coordination. The complex is formed in the presence of a substoichiometric amount of Pb2+, which hints at a cooperative mechanism of formation. P. Klüfers and J. Schuhmacher report more on this attractive first member of a long-neglected class of compounds on p. 1863 ff.

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