| Abstract |
Compounds of general formula N(R-1)(R-2)CH(2)CH(2)py (py = C5H4N: R-1 = R-2 = SiMe3, 1a; R-1 = H, R-2 = Si BuMe2, 1b; R-1 = SiMe3, R-2 = Si BuMe2, 1c; R-1 = SiMe3. R-2 = Ph, 5) were synthesised. They readily reacted with TiCl4 to afford the corresponding amidoaminotrichlorides \Ti[N(R-2)(CH(2)CH(2)py)]Cl-3\ (R-2 = SiMe3, 2a, R-2 = Si BuMe2, 2b; R-2 = Ph, 6). The related imido derivatives \Ti[N(CH(2)CH(2)py)]Cl-2\(n) (3b) and \Ti[N(CH(2)CH(2)py)](L)Cl-2\(2) (L=THF, 3c: PMe3, 3d) were isolated upon heating and reaction with L, respectively. Reaction of 6 with THF afforded the corresponding adduct, \Ti[N(Ph)(CH(2)CH(2)py)](THF)Cl-3\ (7). Compound 3b reacted with LiNMe2 to give asymmetrical \Ti-2[N(CH(2)CH(2)py)][N(CH(2)CH(2)py)] Cl-4\ (4a). Compound \CpTi[N(CH(2)CH(2)py)]Cl\(n), (4b), was formed when 3b reacted with NaCp. Analogous studies with 2a and 6 led to Cp2TiCl2. \Cp2Ti2[mu -N(Ph)]Cl-2\ (8) was isolated as the product of CpTiCl3 and Na[N(Ph)CH(2)CH(2)py]. The molecular structure of 3c was determined by X-ray single crystal diffraction. (C) 2001 Elsevier Science B.V. All rights reserved. |
