ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Divinylidene compounds such as bis(1-phenylvinyl)benzenes not being anionically homopolymerizable add sec-butyllithium (sBuLi) to form biscarbonionic species. The reaction can be treated as a consecutive addition reaction. For 1,3-bis(1-phenylvinyl)benzene the rate constants of the first and second addition step of sBuLi are both 1,98 · 10-2 1/(mol · s); for 1,4-bis(1-phenylvinyl)benzene the rate constant for the first step is 2,06 · 10-2 1/(mol · s) and that for the second step is 1,51 · 10-3 1/(mol · s) (in toluene as solvent, with an excess of sBuLi at 20°C). The overall activation energy of the individual steps is 60 kJ/mol, the frequency exponent being between 8 and 9.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1983.021840915