A strongly twisted SiSi bond with resemblance to a buckled dimer in an unexpected isomer of hexasilabenzene.

Autor:	Helmer J; Westfälische-Willhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 28-30, 48149 Münster, Germany. lips@uni-muenster.de., Hepp A; Westfälische-Willhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 28-30, 48149 Münster, Germany. lips@uni-muenster.de., Lips F; Westfälische-Willhelms-Universität Münster, Institut für Anorganische und Analytische Chemie, Corrensstraße 28-30, 48149 Münster, Germany. lips@uni-muenster.de.
Jazyk:	angličtina
Zdroj:	Dalton transactions (Cambridge, England : 2003) [Dalton Trans] 2022 Feb 22; Vol. 51 (8), pp. 3254-3262. Date of Electronic Publication: 2022 Feb 22.
DOI:	10.1039/d2dt00259k
Abstrakt:	The reductive debromination of {N(SiMe 3 )Ph}SiBr 3 1 with Rieke magnesium yields the six-vertex amido-substituted silicon cluster 2 with zwitterionic character that represents an unprecedented isomer of hexasilabenzene. The topology of Si1 and Si2 in 2 has bonding features of a highly twisted disilene and resembles that of a buckled dimer of Si(100)2 × 1 reconstructed surfaces. Cluster 2 forms the adducts 3 and 4 with NHC Me4 and DMAP, respectively. The NHC adduct 4 additionally coordinates to BH 3 which affords the saturated cluster BH 3 NHC Me4 Si 6 {N(SiMe 3 )Ph} 6 (5). Furthermore, 2 undergoes addition with MeI and iodine to form the halogenated silicon clusters 6 and 7, respectively.
Databáze:	MEDLINE
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