Title: Multinuclear NMR Spectroscopic Characterization of a Fluorinated Enolatoimine Titanium Polymeryl Species in the Living Ethylene-<i>co</i>-Norbornene Polymerization
Abstract:A multinuclear NMR spectroscopic study was performed to assess the nature of species responsible for living ethylene (E)–norbornene (N) copolymerization reaction using the fluorinated enolatoimine tit...A multinuclear NMR spectroscopic study was performed to assess the nature of species responsible for living ethylene (E)–norbornene (N) copolymerization reaction using the fluorinated enolatoimine titanium complex [Ti(κ2-N,O-{2,6-F2C6H3N═C(Me)C(H)C(CF3)O})2Cl2] (1) activated with dry methylaluminoxane (d-MAO). The analysis involved (i) the catalytic system (1 with MAO); (ii) the species formed after simultaneous addition of 13C-enriched ethylene and norbornene and after further addition of 13C-enriched ethylene; and (iii) species formed during norbornene homopolymerization. The results supported the existence of noncovalent interactions of ortho-fluoroaryl substituents with the titanium center, which contribute to the living character of the copolymerization reaction.Read More
Publication Year: 2014
Publication Date: 2014-05-06
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 4
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