Complexes of tris(pentafluorophenyl)boron with nitrogen-containing compounds: Synthesis, reactivity and metallocene activation

被引:175
作者
Focante, F
Mercandelli, P
Sironi, A
Resconi, L
机构
[1] Basell Polyolefins, Ctr Ric G Natta, I-44100 Ferrara, Italy
[2] Univ Bologna, Dipartimento Chim Organ A Mangini, I-40136 Bologna, Italy
[3] Univ Milan, Dipartimento Chim Strutturale & Stereochim Inorga, I-20133 Milan, Italy
关键词
perfluoroarylboranes; boron-nitrogen complexes; Lewis acid-Lewis base adducts; metallocenes; ion pairs;
D O I
10.1016/j.ccr.2005.05.005
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The strong Lewis acid tris(pentafluorophenyl)boron, B(C6F5)(3), reacts with several nitrogen-containing Lewis bases (nitriles, amines, imines, pyridines, etc.) and also with non-basic substrates (such as pyrroles and indoles) producing in both cases the B-N coordination adduct. With particular substrates (some tertiary amines, the imine 'Bu(Me)C=NBn, N-methyl-pyrrole and -indole,) the 1:1 borane/N-compound reaction produces zwitterions where a new B-C bond is generated. Some of the borane-N-compound adducts present Bronsted acidity and can be reacted with di-methyl group 4 complexes with generation of weakly associated ion pairs, which are active catalysts for the polymerization of olefins. (c) 2005 Elsevier B.V. All rights reserved.
引用
收藏
页码:170 / 188
页数:19
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