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Pure Appl. Chem., 2008, Vol. 80, No. 3, pp. 447-457

Disilyne with a silicon-silicon triple bond: A new entry to multiple bond chemistry

Akira Sekiguchi

Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8571, Japan

Abstract: The synthesis, crystal structure, and characterization of a silicon-silicon triply bonded species, disilyne with two bis[bis(trimethylsilyl)methyl]isopropylsilyl substituents, are described. The nature of the sp-hybridized silicon atoms is discussed from the viewpoint of spectroscopic results and theoretical calculations. The reactivity of the disilyne with alkali metals, tBuLi, and π-bonded compounds such as cis- and trans-2-butenes and phenylacetylene is also described.