Titanocen- und Zirconocen(diazadien)-Komplexe: Darstellung, Charakterisierung und Struktur

✍ Scribed by Scholz, Joachim ;Dlikan, Mansour ;Ströhl, Dieter ;Dietrich, Andreas ;Schumann, Herbert ;Thiele, Karl-Heinz

• Publisher: Wiley (John Wiley & Sons)
• Year: 1990
• Tongue: English
• Weight: 700 KB
• Volume: 123
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19901231209

✦ Synopsis

Metallocenes / Envelope structure 1 Ring inversion Titanium complexes 1 Zirconium complexes / Diazadiene ligands Titanocene-and Zirconocene(diazadiene) Complexes: Preparation, Characterization, and Structure By treating Cp2MC12 (M = Ti, Zr) with magnesium in the bent metallocene unit Cp2M from one "face" of the reduced presence of the diazadienes R'N = CR2CR2 = NR' (R1 = R2 = diazadiene to the other. From the *H-NMR Cp-coalescence Ph: 1 a; R' = Ph, R2 = Me: 1 b) metallocene complexes of for-A G * values for the activation barrier of this automerization mula Cp,M(R1NCR2 = CR'NR') (M = Ti: 2a, b; M = Zr: 3a, process have been obtained. Complex 3a was characterized b) have been obtained in good yields. 2a-3b exhibit dynamic by X-r:y diffraction. The five-membered metallacyclic NMR spectra indicating a rapid intramolecular migration of the ZrNCCN ring system adopts an "envelope"-conformation.

Synthese und Eigenschaften der Metallocen(diazadien)-Komplexe

Werden die Metallocendichloride des Titans und Zirconiums mit Magnesium in Gegenwart n-acider Liganden re-