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Synthesis and Characterization of the Dilithium Salt of the Octasilyl[4]radialene Dianion: Evidence for a Lithium Walk on the Eight-Center, Ten-Electron π-Electron System

✍ Scribed by Akira Sekiguchi; Tsukasa Matsuo; Hideki Sakurai

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 161 KB
Volume: 37
Category: Article
ISSN: 0044-8249
DOI: 10.1002/(sici)1521-3773(19980703)37:12<1661::aid-anie1661>3.0.co;2-o

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✦ Synopsis

A highly symmetric structure is displayed in toluene by 1, which was obtained by reduction of octasilyl[4]radialene with lithium in THF. The two Li ions of 1 are not fixed to the π-electron system in toluene, but are fluxional, giving rise to a bis-contact ion pair. In a solvating medium such as THF, one of the Li ions dissociates in such a way that 1 exists as a contact ion pair and a solvent-separated ion pair.

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