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Structure and Properties of an Overcrowded 1,2-Dibromodigermene

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Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
Cite this: Organometallics 2005, 24, 13, 3309–3314
Publication Date (Web):May 24, 2005
https://doi.org/10.1021/om050129n
Copyright © 2005 American Chemical Society
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Abstract

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A 1,2-dibromodigermene having Bbt groups (Bbt = 2,6-bis[bis(trimethylsilyl)methyl]-4-[tris(trimethylsilyl)methyl]phenyl) was synthesized by the reaction of BbtLi with GeBr2·dioxane. X-ray crystallographic analysis revealed that it retains the GeGe double bond in the solid state, while the equilibrium between the 1,2-dibromodigermene and the corresponding bromogermylenes in solution was evidenced by the UV−vis spectroscopic studies and the chemical reactions. The reactions of the 1,2-dibromodigermene with elemental sulfur in toluene resulted in the formation of a cis-dithiadigermetane derivative, indicating the generation of a transient germathiocarbonyl bromide derivative via the sulfurization reaction of the Bbt-substituted bromogermylene generated in the equilibrium state.

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X-ray crystallographic data of 1 and 15 in CIF format. These materials are available free of charge via the Internet at http://pubs.acs.org.

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