The polymerization of acenaphthylene by carbocation salts in nitrobenzene
1981; Wiley; Volume: 182; Issue: 11 Linguagem: Inglês
10.1002/macp.1981.021821111
ISSN0025-116X
AutoresStephen D. Pask, P. H. Plesch, S.B. Kingston,
Tópico(s)Molecular Spectroscopy and Structure
ResumoAbstract Acenaphthylene was polymerized in nitrobenzene at 25°C by NO 2 SbF 6 , C 2 H 5 COSbF 6 , C 6 H 5 COPF 6 , and (C 6 H 5 ) 2 CHSbF 6 . With monomer so rigorously purified that it contained only ca. 0,01 mol‐% of inhibiting impurities the reaction pattern indicated propagation by unpaired cations, and a k = 23,3 ± 2 dm 3 ·mol −1 ·s −1 (the first for this monomer) was obtained. There are at least two chain‐breaking reactions of which one is the proton transfer to monomer which has K = 2,3 dm 3 ·mol −1 ·s −1 . The kinetic irregularities and colours which develop at high conversions are probably due to the formation of non‐propagating allylic cations from unsaturated end‐groups.
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