Titanium(<Emphasis Type="SmallCaps">IV</Emphasis>) chloride complexes with chiral tetraaryl-1,3-dioxolane-4,5-dimethanol ligands as a new type of catalysts of ethylene polymerization |
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| Authors: | Yu N Belokon’ S Ch Gagieva T A Sukhova A B Dmitriev K A Lyssenko N M Bravaya B M Bulychev D Seebach |
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| Institution: | (1) A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 ul. Vavilova, 119991 Moscow, Russian Federation;(2) Department of Chemistry, M. V. Lomonosov Moscow State University, 1 Leninskie Gory, 199992 Moscow, Russian Federation;(3) Institute of Problems of Chemical Physics, Russian Academy of Sciences, 142432 Chernogolovka, Moscow Region, Russian Federation;(4) Laboratory of Organic Chemistry, Department of Chemistry and Applied Biosciences, Swiss Federal Institute of Technology, ETH-Zurich, 10 Wolfgang-Pauli-Strasse, CH-8093 Zurich, Switzerland |
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| Abstract: | Titanium complexes of chiral ligands, (4R,5R)-2,2-dimethyl-α,α,α′,α′-tetraphenyl-1,3-dioxolane-4,5-dimethanol and its structural analogs, activated by polymethylalumoxane
catalyze ethylene polymerization with an activity from 3 to 530 (kg polyethylene) (mol Ti h atm)−1. An increase in the bulk of the aryl substituents results in a decrease in the catalytic activity of the complexes.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 2275–2280, October, 2005. |
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| Keywords: | titanium chloride chiral ligands structure homogeneous catalysts polymerization ethylene polyethylene |
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