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ABSORPTION SPECTRA OF LIVING OLIGOMERS OF ALPHA-METHYLSTYRENE

被引：23
作者：
COMYN, J
IVIN, KJ
机构：
[1] Department of Chemistry, The Queen's University of Belfast
来源：
EUROPEAN POLYMER JOURNAL | 1969年 / 5卷 / 04期
关键词：
D O I：
10.1016/0014-3057(69)90086-X
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The absorption spectra of living anionic oligomers of α-methylstyrene with lithium, sodium and potassium counterions have been recorded at temperatures down to -100° in tetrahydrofuran (THF) and -50° in tetrahydropyran (THP). The spectra have been interpreted in terms of an equilibrium between contact ion-pairs and solvent-separated ion-pairs. For sodium counterions in THF, equal concentrations of the two species are present at -73°. © 1969.
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