Desymmetrization of Dicationic Diboranes by Isomerization Catalyzed by a Nucleophile

被引：0
|
作者：
Schön, Florian [1 ]
Greb, Lutz [1 ]
Kaifer, Elisabeth [1 ]
Himmel, Hans-Jörg [1 ]
机构：
[1] Anorganisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg,69120, Germany
来源：
Advanced Materials | 2020年 / 59卷 / 23期
关键词：
Cationic monoboranes exhibit a rich chemistry. By constrast; only a few cationic diboranes are known; that all are symmetrically substituted. In this work; the first unsymmetrically substituted dicationic diboranes; featuring sp2–sp2-hybridized boron atoms; are reported. The compounds are formed by intramolecular rearrangement from preceding isomeric symmetrically substituted dicationic diboranes; a process that is catalyzed by nucleophiles. From the temperaturedependence of the isomerization rate; activation parameters for this unprecedented rearrangement are derived. The difference in fluoride ion affinity between the two boron atoms and the bonding situation in these unique unsymmetrical dicationic diboranes are evaluated. © 2020 Wiley-VCH Verlag GmbH & Co. KGaA; Weinheim;
D O I：
10.1002/ANGE.202001640
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页码：9212 / 9218
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