Angewandte Chemie International Edition

Cover image for Vol. 55 Issue 36

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

47_43b/2008Inside Cover: Si@Al56[N(2,6-iPr2C6H3)SiMe3]12: The Largest Neutral Metalloid Aluminum Cluster, a Molecular Model for a Silicon-Poor Aluminum–Silicon Alloy? (Angew. Chem. Int. Ed. 43/2008)

Unique amongst metalloid clusters is one described in the Communication from H. Schnöckel et al. on page 8201 ff. A Si centered Al44 structural unit is protected by 12 AlR units to give Si§Al56R'12. The Si atom itself has a coordination number of 4 and the Al atoms in the SiAl44 scaffolding form four Al-centered cuboctahedra. The formation of this structure by doping with one Si atom is a reminder that care should be taken in the interpretation of the characterization data of such nanoscale metal particles.

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