Darstellung und Molekülstruktur des (μ-Alkylidenamido)titanocenkomplexes [(C5H5)2TiCl]2[μ-{NC(CH2C6H5)C(CH2C6H5)N}]

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Abstract

Reduction of (C5H5)2TiCl2 with Zn in presence of benzyl cyanide gives the (μ-alkyl-ideneamido)titanocene complex [(C5H5)2TiCl]2[μ-{NC(CH2C6H5)C(CH2C6H5)N}] with CC bond formation between two benzyl cyanide molecules.

X-ray structure investigation indicates a symmetrical structure. The CN distances are smaller than usual, the TiN distances are very short, and the TiNC angle differs only a little from 180°, which infers a heteroallene structure of the complex.

Zusammenfassung

Bei der Reduktion von (C5H5)2TiCl2 mit Zink in Gegenwart von C6H5CH2CN entsteht der (μ-Alkylidenamido)titanocen-Komplex [(C5H5)2TiCl]2[μ-{NC(CH2C6H5)C(CH2C6H5)N}] unter CC-Verknüpfung zweier Benzylcyanid-Moleküle.

Die Röntgenkristallstrukturanalyse weist eine symmetrische Struktur aus. Die CN-Abstände sind kleiner als üblich, die TiN-Abstände sehr kurz, und der Winkel TiNC weicht nur wenig von 180° ab, was auf eine Heteroallen-Struktur der Verbindung schlieβen läβt.

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