The lithium amidinate [Me3SiNC(Ph)N(CH2)3N(Me)SiMe3]Li(THF) (2), with a pendant methyl(trimethylsilyl)amine functionality, was prepared and found to react with [TiCl4(THF)2] to give the titanium amidinate-amide dichloride complex [2,1-Me3SiNC(Ph)N(CH2)3NMe]TiCl2 (3) by elimination of LiCl and Me3SiCl. The elimination of Me3SiCl from the cyclopentadienyl derivative Cp[2-Me3SiNC(Ph)N(CH2)3N(SiMe3)Me]TiCl2 (5) to give Cp[2,1-Me3SiNC(Ph)N(CH2)3NMe]TiCl (4) is much less favorable, and was found to be readily reversible. Dialkyltitanium complexes [2,1-Me3SiNC(Ph)N(CH2)3NMe]Ti(CH2R)2 [R = Ph (6), SiMe3 (7)] were prepared, but could not be activated for catalytic ethene polymerization.
Meerendonk, van, W. J., Schröder, K., Brussee, E. A. C., Meetsma, A., Hessen, B., & Teuben, J. H. (2003). Chloro- and alkyltitanium complexes of a new dianionic ancillary ligand: A linked amidinate-amide. European Journal of Inorganic Chemistry, (3), 427-432. https://doi.org/10.1002/ejic.200390059