Cover Picture: The Mackay‐Type Cluster [Cu43Al12](Cp*)12: Open‐Shell 67‐Electron Superatom with Emerging Metal‐Like Electronic Structure (Angew. Chem. Int. Ed. 44/2018). Issue 44 (18th October 2018)

• Record Type: Journal Article
• Authors: Weßing, Jana; Ganesamoorthy, Chelladurai; Kahlal, Samia; Marchal, Rémi; Gemel, Christian; Cador, Olivier; Da Silva, Augusto C. H.; Da Silva, Juarez L. F.; Saillard, Jean‐Yves; Fischer, Roland A.
• Is Part Of: Angewandte Chemie international edition. Volume 57:Issue 44(2018)
• Page Start: 14293
• Page End: 14293
• Publication Date: 2018-10-18
• Subjects: aluminum -- clusters -- copper -- superatoms; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201811547
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract : The M55 magic‐atom‐number cluster [Cu43 Al12 ](Cp*)12 features a Mackay‐type nested icosahedral core–shell structure, protected by twelve Cp* (Cp*=η‐C5 (CH3 )5 ) groups. As shown by J.‐Y. Saillard, R. A. Fischer, and co‐workers in their Communication onpage 14630 ff., its open‐shell 67 electron superatom configuration features three unpaired electrons occupying weakly antibonding jellium states. The situation prefigures the formation of a conduction band, which is in line with the temperature‐independent magnetism.