Unverbrücke fluorenylkomplexe des typs (C5H5)(9-R-C13H8)ZrCl2 (R Me3Si, alkyl, aryl): synthese, charakterisierung und anwendung als katalysatoren bei der homogenen olefinpolymerisation
作者:Michael A. Schmid、Helmut G. Alt、Wolfgang Milius
DOI:10.1016/s0022-328x(96)06480-7
日期:1996.11
compounds (9-R-C-13H9) (R Me3Si, alkyl, aryl) (1a−i) with butyllithium followed by treatment with (C5H5)ZrCl3 leads to unbridged fluorenyl complexes of the type (C5H5)(9-R-C13H8)ZrCl2. In combination with methylaluminoxane, complexes 2a−i show at high catalytic activity as homogeneous ethylene polymerization catalysts. Compounds 2c (R 1Pr), 2d (R = cyclohexyl), and 2e (R 1Bu) were characterized
各种9-取代的芴化合物(9-RC- 13 H 9)(RMe 3 Si,烷基,芳基)(1a-i)与丁基锂反应,然后用(C 5 H 5)ZrCl 3处理(C 5 H 5)(9-RC 13 H 8)ZrCl 2类型的未桥接芴基配合物。与甲基铝氧烷组合使用时,配合物2a-i作为均相乙烯聚合催化剂具有较高的催化活性。通过X射线结构分析表征化合物2c(R 1 Pr),2d(R =环己基)和2e(R 1 Bu)。
A novel redox reaction of the disulphide dication salt (R<sub>2</sub>S<sup>+</sup>–<sup>+</sup>SR<sub>2</sub>·2X<sup>–</sup>) with carbanions and alkoxides
The disulphide dication salt, 1,5-dithioniabicyclo[3.3.0]octane bis(trifluoromethanesulphonate)(1) was reduced upon treatment with carbanions or alkoxides; it did not deprotonate.