BIS(SUBSTITUTED BENZOATO) COMPLEXES OF BIS(ETA-CYCLOPENTADIENYL) TITANIUM(IV) - SYNTHESIS AND MASS-SPECTRA, H-1-NMR 13C-NMR AND IR-SPECTRA

The syntheses of 32 complexes of the type (η-C5H5)2Ti(OOCC6H4X)2 are reported together with their mass, 1H NMR, 13C NMR, mid- and far-IR spectra. The data are consistent with a model in which the TiOOC bond strength (weaker than that of TiCp and TiHal) is stabilized by electron-withdrawing substituents X on the phenyl rings. The electronic influence of X also extends into the cyclopentadienyl rings. © 1990.