Synthese und Reaktionen von (η51-Pentamethylcyclopentadienyl)1- und (η51-Ethyltetramethylcyclopentadienyl)titantrifluorid

✍ Scribed by Sotoodeh, Mansoreh ;Leichtweis, Iring ;Roesky, Herbert W. ;Noltemeyer, Mathias ;Schmidt, Hans-Georg

• Publisher: Wiley (John Wiley & Sons)
• Year: 1993
• Tongue: English
• Weight: 716 KB
• Volume: 126
• Category: Article
• ISSN: 0009-2940
• DOI: 10.1002/cber.19931260410

✦ Synopsis

Preparation and Reactions of (q5-Pentamethylcyclopentadieny1)-and (qJ-Ethyltetramethy1cyclopentadienyl)titanium Trifluoride 1' 1 Compound Cp*TiC13 (1, Cp* = $-Me&) reacts with an excess of AsF3 to yield the crystalline complex [Cp*TiF3jz . 2 AsF3 (2). AsF3 can be removed from 2 in vacuo to give Cp*TiF3 (3). Complex (q5-EtMe,C5)TiC13 (4) is converted by an excess of AsF, to (q5-EtMe4C5)TiF3 (5). Compound 3 reacts with a lithium 1,3-diketonate to form the hexacoordinated complex Cp*TiF,(b = C(OEt)C(Ph) = C(0Et) -0) (6) and with a lithium benzamidinate to yield pentacoordinated C P * T ~F , [ ( M ~~S ~N ) ~C -C6H4OMe-(4)] (7): The reaction of 3 with Ph3PNSiMes and CzHz(PhzPNSiMe3), leads to Cp*TiFzNPPh3 (8) and (Cp*Ti-F2NPPh2)2C2H2 (9), respectively. X-Ray structure analyses of compounds 2 and 5 -9 have been performed. '0 Abb. 1. Molekiilstruktur von 2; die AsF3-Molekiile sind nicht eingezeichnet. Ausgewahlte Bindungsabstande [pm] und -winkel PI: Ti-F(1) 182.2(3), Ti-F(3) 200.2(3); Ti-F(3a)-Ti(a) llO.O(l), F(3a) -Ti -F(3) 70.0(1)