IMIDOTITANIUM COMPLEXES WITH HETEROALLYLIC LIGANDS - SYNTHESIS AND SOLID-STATE STRUCTURE

Treatment of Ti(NtBu)Cl-2(py)(2) (1, py = pyridine) with bulky heteroa llylic ligands in a 1:1 molar ratio affords the monosubstituted deriva tives [PhC(NSiMe3)(2)]Ti(NtBu)Cl(py)(2) (2), [Me-OC6H4C(NSiMe3)(2)]Ti( NtBu)Cl(py) (3), and [Ph2P(NSiMe3)(2)]-Ti(NtBu)Cl(py) (4). Similarly, 2:1 reactions afforded the disubstitution products [PhC(NiPr)(2)](2)Ti (NtBu) (py) (6) and [Ph2P(NSiMe3)(2)](2)Ti(NtBu) (7). The bis(pyridine ) adduct Ph2P(NSiMe3)(2)Li(py)(2) (5) was isolated as a by-product dur ing the preparation of 4. The molecular structures of 7 has been estab lished by X-ray crystallography.