Reactions of Titanium and Zirconium Derivatives of Bis(trimethylsilyl)acetylene with Tris(pentafluorophenyl)borane: A Titanium(III) Complex of an Alkynylboranate

Stabilization by coordination: A long sought after intermediate is stabilized by complexation: B(C6F5)3 reacts at a bis(trimethylsilyl)acetylene titanium complex with CSi bond cleavage and BC bond formation to give the coordinatively stabilized (trimethylsilyl)alkynylboranate 1. The reaction of th...

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Published inAngewandte Chemie International Edition Vol. 42; no. 12; pp. 1414 - 1418
Main Authors Arndt, Perdita, Baumann, Wolfgang, Spannenberg, Anke, Rosenthal, Uwe, Burlakov, Vladimir V., Shur, Vladimir B.
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 28.03.2003
WILEY‐VCH Verlag
Subjects
borate ligands
lewis acids
titanium
zirconium
zwitterions
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Summary:Stabilization by coordination: A long sought after intermediate is stabilized by complexation: B(C6F5)3 reacts at a bis(trimethylsilyl)acetylene titanium complex with CSi bond cleavage and BC bond formation to give the coordinatively stabilized (trimethylsilyl)alkynylboranate 1. The reaction of the corresponding zirconium complex proceeds totally different giving the agostic complex 2.
Bibliography:We thank Prof. Karel Mach, Prague, for ESR measurements. This work was supported by the Deutsche Forschungsgemeinschaft (No. AR 321/1-1), the Fonds der Chemischen Industrie, and the Russian Foundation for Basic Research (code 02-03-32589).
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ArticleID:ANIE200390364
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We thank Prof. Karel Mach, Prague, for ESR measurements. This work was supported by the Deutsche Forschungsgemeinschaft (No. AR 321/1‐1), the Fonds der Chemischen Industrie, and the Russian Foundation for Basic Research (code 02‐03‐32589).
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.200390364