| Abstract
| - Here we report the synthesis of several 1,4-diaza-1,3-butadiene cyclopentadienyl titanium complexes. Temperature-dependent spectroscopic behavior of 1,4-diaza-1,3-butadiene cyclopentadienyl chloro and μ-oxo titanium complexes was studied. The crystal structure of Ti(η5-C5Me5)(η4-iPrNCHCHNiPr)Me has been determined by X-ray crystal diffraction.
- We report the synthesis of 1,4-diaza-1,3-butadiene (dad) complexes Ti(η5-C5R5)(η4-R‘2-dad)Cl (R = H, Me; R‘ = iPr, tBu) by reaction of Ti(η5-C5R5)Cl3 (R = H, Me) with the dilithiumsalts of diisopropyl- and di-tert-butyl-substituted 1,4-diaza-1,3-butadienes (Li2[R‘2-dad]).Alkylation of the pentamethylcyclopentadienyl diisopropyl and di-tert-butyl derivatives withmethylmagnesium chloride and methyllithium gave complexes Ti(η5-C5Me5)(η4-iPr2-dad)Meand Ti(η5-C5Me5)(η4-tBu2-dad)Me, respectively. Addition of excess water to di-tert-butyl chlorocomplexes gave the oxo-bridged complexes [{Ti(η5-C5R5)(η4-tBu2-dad)}2(μ-O)] (R = H, Me).The temperature-dependent spectroscopic behavior of Ti(η5-C5H5)(η4-tBu2-dad)Cl and [{Ti(η5-C5H5)(η4-tBu2-dad)}2(μ-O)] complexes was studied. The crystal structure of Ti(η5-C5Me5)(η4-iPr2-dad)Me was determined by X-ray crystal diffraction on a single crystal and shows adistorted trigonal bipyramidal structure.
|
