Angewandte Chemie International Edition

Cover image for Vol. 56 Issue 44

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

22/2000The cover picture shows a remarkable Pd145 nanocluster, whose metal-core geometry was unambiguously characterized from complete analyses of crystallographic X-ray data. This unprecedented close-packed multishell carbonyl metal cluster was isolated from the reduction of a monomeric square-planar palladium precursor [Pd(PEt3)2Cl2]. The structure is made up of three distinct shells, the outermost of which possesses 60 equivalent vertices along with 12 pentagonal, 20 equilateral triangular, and 30 square faces; this semiregular (Archimedean) polyhedron, named rhombicosidodecahedron (with Schläfli symbol, is a hitherto crystallographically unknown stereoisomer of the universally familiar C60 buckyball, an icosahedrally truncated semiregular polyhedron of Ih symmetry with 60 equivalent vertices and 12 pentagonal and 20 hexagonal faces. More about this fascinating nanocluster can be found in the communication by L. Dahl et al. on p. 4121 ff.

Read Full Text  | Table of Contents