Organometallics 1988, 7, 1148-1154
1148
Insertion Reactlons of Nitriles in Cationic Alkylbis(cyclopentpdienyl)titanium Complexes: The Facile Synthesis of Azaalkenylidene Titanium Complexes and the Crystal and Molecular Structure of [ (Indenyl),Ti(NCMePh)(NCPh)]BPh, Manfred Bochmann" and Ladlslav M. Wilson School of Chemical Sciences, Universlv of East Angila, Norwich NR4 7TJ, U.K.
Michael B. Hursthouse and Majid Motevalll Department of Chemistry, Queen Mary College, London E l 4NS, U.K. Received October 1, 1987
The cationic methylbis(cyc1opentadienyl)titanium nitrile complexes [Cp,TiMe(N=CR)]BPh, (R = Me, n-Pr, t-Bu, Ph) are readily converted to the azaalkenylidene complexes [Cp,Ti(N=CMeR)(NCR)]BPh, as the products of a migratory insertion of nitriles into the Ti-methyl bond. The kinetics of the insertion reactions show a first-order dependence on the titanium alkyl and zero-order in the concentration of free nitrile. The reaction rates increase in the order Me
