A Stable Bicyclic Compound with Two Si=Si Double Bonds

+ See all authors and affiliations

Science  20 Oct 2000:
Vol. 290, Issue 5491, pp. 504-506
DOI: 10.1126/science.290.5491.504

You are currently viewing the abstract.

View Full Text

Via your Institution

Log in through your institution

Log in through your institution


In contrast to carbon, silicon does not readily form double bonds, and compounds containing silicon-silicon double bonds can usually be stabilized only by protection with bulky substituents. We have isolated a silicon analog of spiropentadiene 1, a carbon double-ring compound that has not been isolated to date. In the crystal structure of tetrakis[tri(t-butyldimethylsilyl)silyl]spiropentasiladiene2, a substantial deviation from the perpendicular arrangement of the two rings is observed, and the silicon-silicon double bonds are shown to be distorted. Spectroscopic data indicate pronounced interaction between two remote silicon-silicon double bonds in the molecule. Silicon-silicon bonds may be more accessible to synthesis than previously assumed.

  • * To whom correspondence should be addressed. E-mail: mkira{at}

View Full Text

Related Content