Synthesis, reactions, and spectral [NMR (1H, 13C, 29Si) IR] studies of trimethylsilyl-substituted N-arylsalicylaldiminates

Trimethylsilyl-substituted N-arylsalicylaidiminates Me3Si (OC6H4CH=NAr) [Ar=C6H5 (1), C6H3Me2-2,6 (2), C6H2Me3-2,4,6 (3), C3H3Et2-2,6 (4), and C6H3(Pr-i)(2)-2,6 (5)] have been prepared by the equimolar reactions of Me3SiCl with N-arylsalicylaldimines (LH) in benzene using Et3N as a base. Reactions in the desired molar ratios (1:1 or 2:1) of Me3Si(OC6H4CH=NAr) with TiCl4 and ZrCl4 afford a convenient and clean synthetic procedure for the preparation of chloride-salicylaldiminate derivatives of early transition metals. Characterisations of all these new derivatives have been carried out by elemental analyses, molecular weight determinations and spectroscopic [IR, NMR (H-1, C-13 and Si-29)] studies.