Angewandte Chemie International Edition

Cover image for Vol. 54 Issue 49

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, ChemPlusChem, Zeitschrift für Chemie

Cover Picture: Catalytic Hydrogenation of Unsaturated Aldehydes on Pt(111): Understanding the Selectivity from First-Principles Calculations (Angew. Chem. Int. Ed. 33/2005)

44_33/2005The selective hydrogenation of unsaturated aldehydes such as propenal on a Pt(111) surface, as shown in the cover picture, is an example of a heterogeneous catalysis reaction that yields two competitive products: propenol and propanal. The selectivity of this reaction is controlled by the balance between the surface hydrogenation steps and the desorption of the product. D. Loffreda et al. describe on page 5279 ff. the use of density functional theory and a microkinetic model to investigate the reaction pathways.

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Also of Interest

Electrophilic Reagentsfor001

N-Acylhydrazones are stable imine equivalents that can combine with a variety of nucleophiles to yield many useful synthetic building blocks. S. Kobayashi and M. Sugiura present the latest developments in this area in their Minireview on page 5176 ff.

Organic Azidesfor002

Despite the fact that they are often difficult to handle, organic azides have established a niche in organic synthesis. In their Review on page 5188 ff., S. Bräse and co-workers discuss fundamental reactions and new developments in organoazide chemistry.

Cluster Chemistryfor003

In their Communication on page 5242 ff., D. Fenske et al. detail the synthesis and structural characterization of spherical cluster complexes that comprise an ordered shell of {AgStBu} groups and a disordered {(Ag2S)n} core.