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Isolation and Versatile Derivatization of an Unsaturated Anionic Silicon Cluster (Siliconoid)
Author(s) -
Willmes Philipp,
Leszczyńska Kinga,
Heider Yannic,
Abersfelder Kai,
Zimmer Michael,
Huch Volker,
Scheschkewitz David
Publication year - 2016
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201511037
Subject(s) - electrophile , moiety , silicon , derivatization , lithium (medication) , cluster (spacecraft) , salt (chemistry) , characterization (materials science) , chemistry , combinatorial chemistry , nanotechnology , materials science , organic chemistry , computer science , catalysis , medicine , high performance liquid chromatography , programming language , endocrinology
The characteristic features of bulk silicon surfaces are echoed in the related partially substituted—and thus unsaturated—neutral silicon clusters (siliconoids). The incorporation of siliconoids into more‐extended frameworks is promising owing to their unique electronic features, but further developments in this regard are limited by the notable absence of functionalized siliconoid derivatives until now. Herein we report the isolation and full characterization of the lithium salt of an anionic R 5 Si 6 ‐siliconoid, thus providing the missing link between silicon‐based Zintl anions and siliconoid clusters. Proof‐of‐principle for the high potential of this species for the efficient transfer of the intact unsaturated R 5 Si 6 moiety is demonstrated by clean reactions with representative electrophiles of Groups 13, 14, and 15.