ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
1,1′-Diisopropenylferrocene (1a) was homopolymerized using trifluoroacetic acid or boron trifluoride etherate as initiators, with excellent yields (〉90%) of polymer (8100 〈 M̄n 〈 14700). Spectroscopic evidence established an initial protonation of 1a to give a tertiary monocarbenium ion (3) which does not readily undergo intramolecular cyclization (into 4). Analysis of isolated homopolymers by 1H and 13C NMR spectroscopy revealed significant residual unsaturation, consistent with facile chain transfer. Adventitious oxidation occurred during workup to give a mixed valence (Fe(II)/Fe(III)) polymer which could be distinguished spectroscopically from the unoxidized polymer.
Additional Material:
6 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1983.021840909
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