Abstract: | Reaction of Ti(O-n-Bu)4 (TBT) with AlR3 (R = Me, Et,i-Bu) in solvents such as R2O, Py, and Et3N, reduces Ti(IV) to Ti(III), Ti(II), or Ti(I). The organotitanium compounds formed by the reaction of TBT with organoaluminum compounds (OAC) undergo homolytic decomposition at the bond in Ti-C. Isotopic exchange analysis using C2D4 suggested the formation of particles containing Ti-CH2CH2-Ti, Al-CH2CH2-Al, Al-CH2CH2-Ti, M=CHCH3, and MMCHCH3 (M, M = Al or Ti) fragments. An ESR spectral analysis established that reaction of TBT with TEA in R2O, Py, and Et3N environments produced two types of paramagnetic complexes, precursors of active centers of ethylene dimerization. The influence of various factors on the kinetics of accumulation and consumption of these complexes was investigated and their structures are suggested.Deceased.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 7, pp. 1516–1525, July, 1992. |