One‐Step Synthesis of a [20]Silafullerane with an Endohedral Chloride Ion1. (4th March 2015)

• Record Type: Journal Article
• Authors: Tillmann, Jan; Wender, Josef Heinrich; Bahr, Ute; Bolte, Michael; Lerner, Hans‐Wolfram; Holthausen, Max C.; Wagner, Matthias
• Is Part Of: Angewandte Chemie. Volume 127:Number 18(2015)
• Page Start: 5519
• Page End: 5523
• Publication Date: 2015-03-04
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1002/ange.201412050
• Languages: English
• ISSNs: 0044-8249

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Silicon analogues of the most prominent carbon nanostructures, namely, hollow spheroidals such as C₆₀ and the fullerene family, have been unknown to date. Herein we show that discrete Si₂₀ dodecahedra, stabilized by an endohedral guest and valence saturation, are accessible in preparative yields through a chloride‐induced disproportionation reaction of hexachlorodisilane in the presence of tri(<italic>n</italic>‐butyl)amine. X‐ray crystallography revealed that each silicon dodecahedron contains an endohedral chloride ion that imparts a net negative charge. Eight chloro substituents and twelve trichlorosilyl groups are attached to the surface of each cluster in a strictly regioregular arrangement, a thermodynamically preferred substitution pattern according to quantum‐chemical assessment. Our results demonstrate that the wet‐chemical self‐assembly of a complex, monodisperse Si nanostructure is possible under mild conditions starting from simple Si₂ building blocks.</p> </abstract>