Synthesis and properties of stable 1,2-bis(metallocenyl)disilenes: Novel d-π conjugated systems with a Si=Si double bond

Akihiro Yuasa, Takahiro Sasamori, Yoshinobu Hosoi, Yukio Furukawa, Norihiro Tokitoh

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    Abstract

    Stable 1,2-bis(metallocenyl)disilenes were synthesized for the first time and were characterized by spectroscopic and X-ray crystallographic analyses. On the basis of cyclic voltammograms, (E)-1,2-bis(ferrocenyl)-1,2-bis(2,4,6- triisopropylphenyl)disilene (1a) was found to be a stable five-electron redox system with four steps, while (E)-1,2-bis(ruthenocenyl)-1,2-bis(2,4,6- triisopropylphenyl)disilene (1b) showed four-step redox couples with four electrons. The UV-vis spectra and theoretical calculations for these disilenes suggested that they should be novel d-π conjugated systems containing a disilene unit. In addition, chalcogenation reactions of 1a resulted in the formation of new heterocyclic compounds bearing ferrocenyl units. For example, the first stable 1,2,3,4-dithiadisiletane derivative was obtained by the sulfurization reaction of 1a.

    Original languageEnglish
    Pages (from-to)793-805
    Number of pages13
    JournalBulletin of the Chemical Society of Japan
    Volume82
    Issue number7
    DOIs
    Publication statusPublished - 2009

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    ASJC Scopus subject areas

    • Chemistry(all)

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