Academic Journal
The First Titanacyclic Five‐Membered Cumulene. Synthesis, Structure, and Reactivity
| العنوان: | The First Titanacyclic Five‐Membered Cumulene. Synthesis, Structure, and Reactivity |
|---|---|
| المؤلفون: | Burlakov, Vladimir V., Ohff, Andreas, Lefeber, Claudia, Tillack, Annegret, Baumann, Wolfgang, Kempe, Rhett, Rosenthal, Uwe |
| المصدر: | Chemische Berichte ; volume 128, issue 10, page 967-971 ; ISSN 0009-2940 |
| بيانات النشر: | Wiley |
| سنة النشر: | 1995 |
| المجموعة: | Wiley Online Library (Open Access Articles via Crossref) |
| الوصف: | The first five‐membered titanacyclic cumulene ( 5 ) was prepared by treatment of the titanocene generator Cp 2 Ti(Me 3 SiC 2 SiMe 3 ) with the di‐ tert ‐butylbutadiyne in a molecular one‐to‐one ratio. The reaction of 5 with “Cp 2 Zr” or of the analogous complex with “Cp 2 Ti” leads to cleavage of the central C‐C bond in the metallacyclocumulene complexes to afford the same product, the heterodimetallic ρ, π,‐alkynyl‐bridged titanocene‐zirconocene complex Cp 2 Zr(μ‐η 1 η 2 ‐C≡C t Bu)Cp 2 Ti(μ‐η 1 η 2 ‐C≡C t Bu) ( 6 ), in which each alkynyl group is π‐bonded to one and π‐bonded to the other metal as shown by X‐ray diffraction studies. In solution the two alkynyl groups become equivalent. The coupling reaction of “Cp 2 Ti” with bis(trimethylsilyl)butadiyne in a one‐to‐two molecular ratio leads to the unsymmetrically substituted titanacyclopentadiene ( 7 ). |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.1002/cber.19951281002 |
| الاتاحة: | https://doi.org/10.1002/cber.19951281002 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fcber.19951281002 https://onlinelibrary.wiley.com/doi/pdf/10.1002/cber.19951281002 |
| Rights: | http://onlinelibrary.wiley.com/termsAndConditions#vor |
| رقم الانضمام: | edsbas.6740D95B |
| قاعدة البيانات: | BASE |
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