SYNTHESIS AND CHARACTERIZATION OF TITANIUM(IV) COMPLEXES WITH SILYLATED SCHIFF-BASES

The complexes formed by reacting titantum tetrachloride with the silylated derivatives of the Schiff bases: N-(2-hydroxyphenyl)salycilideneimine (H2L1), N-(2-dimethylaminoethyl)salycilideneimine (HL2), and N-(2-hydroxyethyl)-salycilidenemine (H2L3) have been synthesized and characterized by elemental and characterized by elemental analyses (C,H,N) and by i.r. and H-1 n.m.r. spectroscopies. The complexes have TiCl2L1, TiL(1)2, TiCl3L2 and TiCl2(HL3)2 stoicheiometries. The spectroscopic data indicate that the ligands coordinate to the metal through the imine nitrogen and the phenolic oxygens, and that in L2 the tertiary amino group is also coordinated to the metal. In HL3 the oxygen of the alcohol group is not coordinated.