Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 47

Editor: Neville Compton; Editor Emeritus: Peter Gölitz

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. 16/1998)

37_16/1998The cover picture shows a schematic representation of the structure of a dinuclear copper(I) complex, the first metallohelicate with liquid crystalline properties (copper centers green, nitrogen-donor atoms blue). The helix provides rigidity and polarizability and thus counterbalances the flexibility and nonpolarizability of the aliphatic C16 chains (represented by zigzag chains on the right and left edges). The pseudo-focal-conic texture of the compound at 100°C as viewed with a polarizing microscope (Leitz Orthoplan) is shown in the background. More about this cation-induced macroscopic ordering of non-mesomorphic ligands is reported by L. Douce, R. Ziessel et al. on pages 2205ff. The graphic was generated by the Euclid Matra Datavision program.

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