Angewandte Chemie International Edition

Cover image for Vol. 53 Issue 17

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, Zeitschrift für Chemie

Cover Picture (Angew. Chem. Int. Ed. Engl. 2/1987)

26_02/1987The cover sows an extremely unusual cyclohexane derivative. In this [6.5]coronane, each pair of neighboring C atoms of the six-membered ring are joined by a -(CH2)3- bridge, resulting in the formation of six-additional rings. The 13C-NMR spectrum of the compound is only in agreement with a rapidly inverting species having an all-cis conformation. Low-temperature spectra, as well as force field calculations, on an analogue containing only five additional rings, indicate that the central ring exists in a flattened chairconformation. Further details are reported by L. Fitjer et. al. on p. 130 ff.

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