Polymerization of epsilon-caprolactone using heterobimetallic lanthanocene complexes

被引：23
|
作者：
Hultzsch, KC [1 ]
Okuda, J [1 ]
机构：
[1] UNIV MAINZ,INST ANORGAN CHEM & ANALYT CHEM,D-55099 MAINZ,GERMANY
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 1997年 / 18卷 / 09期
关键词：
D O I：
10.1002/marc.1997.030180909
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 chiral heterobimetallic complexes Li[Ln(eta(3):eta(1)-(C5R4SiMe2NCH2CH2R2)-Si-1)(2)] (Ln = Y,Lu; C5R41 = C5Me4, C5H4, 3-C(5)H(3)tBu; R-2 = OMe, NMe2; Me: methyl; tBu: tert-butyl) have been found to polymerize epsilon-caprolactone to give a polymer of high molecular weight ((M) over bar(n) > 20000) and moderate polydispersity ((M) over bar(W)/(M) over bar(n) < 2.0). Failure to observe a correlation between monomer/initiator ratio and molecular weight suggests a polymerization mechanism different from a pseudo-anionic mechanism.
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收藏
页码：809 / 815
页数：7
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