Angewandte Chemie International Edition
Copyright © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Cover Picture (Angew. Chem. Int. Ed. Engl. 7/1995)
The cover picture shows the structure of hexakis(trimethylsilylethynyl)radialene, a carbon-rich compound with unusual electronic properties. This trimethylsilyl derivative of a C18H6 hydrocarbon, which could serve as a monomer for a two-dimensional carbon network, can be prepared from readily available compounds in only a few steps. The radialene forms deep red crystals, and unexpectedly its absorption is strongly red-shifted. Solutions of the radialene in dichloromethane are purple-red; electrochemical reduction proceeds through a rainbow of colors from purple-red over violet to light green. F. Diederich et al. report more on this interesting compound on pages 805–809.This issue of Angewandte Chemie serves as a launching pad for the first issue of Chemistry—A European Journal, which is bound at the back. A separate Table of Contents at the beginning of the “Chemistry” section gives more information about the contributions in the inaugural issue.