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.

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页码：480 / 482

页数：3

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