13C nuclear magnetic resonance studies of the adducts of bis-(π-crotyl-D 7-nickel iodide) and 2-alkylbutadienes as related to mechanism of polymerization

By 13C NMR spectroscopy, the structures of (C 4D 7Nil) 2 adducts with isoprene, 2-ethyl-, 2-isopropyl- and 2-tert. butylbutadienes have been investigated. The nature of the 2-alkyl substituent in the anti- and syn-1,2-disubstituted π-allylic complexes influences the character of electron charge dens...

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Bibliographic Details
Published in:European polymer journal 1978, Vol.14 (9), p.743-747
Main Authors: Druz, N.N., Lobach, M.I., Khatchaturov, A.S., Klepikova, V.I., Kormer, V.A.
Format: Article
Language:English
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Summary:By 13C NMR spectroscopy, the structures of (C 4D 7Nil) 2 adducts with isoprene, 2-ethyl-, 2-isopropyl- and 2-tert. butylbutadienes have been investigated. The nature of the 2-alkyl substituent in the anti- and syn-1,2-disubstituted π-allylic complexes influences the character of electron charge densities distribution on the carbon atoms of a π-allylic ligand. Mutual arrangement of substituents in the π-allylic active sites has been shown to remain in the double bonds of elementary units of a polymer chain.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(78)90024-1