Reductive decomposition of cationic half-titanocene(IV) complexes, precursors of the active species in syndiospecific styrene polymerization

被引：139
|
作者：
Grassi, A [1 ]
Zambelli, A [1 ]
Laschi, F [1 ]
机构：
[1] UNIV SIENA,DIPARTIMENTO CHIM,I-52100 SIENA,ITALY
来源：
ORGANOMETALLICS | 1996年 / 15卷 / 02期
关键词：
D O I：
10.1021/om950666f
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Mixtures of Cp*TiR(3) (with Cp* = C-5(CH3)(5) and R = CH3, (CH3)-C-13) and equimolar amounts of B(C6F5)(3) or C(C6H5)(3)B(C6F5)(4), active in the syndiospecific polymerization of styrene, have been investigated by means of ESR spectroscopy. At room temperature the formation of Cp*TiR(+) complexes has been observed. Rapid insertion of styrene occurs in Ti-R bonds of these cationic Ti(lll) complexes, strongly suggesting their role in the stereospecific polyinsertion.
引用
收藏
页码：480 / 482
页数：3
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