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Anionic polymerization of 2-vinylpyridine: a computational study of solvent effects on polymerization stereochemistry.

โœ Scribed by Lawrence M. Pratt; Ishrat M. Khan; Thieo E. Hogen-Esch

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
621 KB
Volume
197
Category
Article
ISSN
1022-1352

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โœฆ Synopsis

Abstract

Anionic polymerization of 2โ€vinylpyridine shows significant solvent effects on the polymer stereochemistry. Polymerization with butyllithium in tetrahydrofuran (THF) yields a largely isotactic polymer, while polymerization with butyllithium in tetramethylโ€ethylenediamine (TMEDA) results in a material with nearly the same stereochemistry as radical polymerization. Semiempirical molecular orbital calculations were used to explain these solvent effects.

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