Solution structure, dynamics and speciation of perfluoroaryl boranes through 1H, 11B and 19F NMR spectroscopy

被引:88
作者
Beringhelli, Tiziana [1 ]
Donghi, Daniela [1 ]
Maggioni, Daniela [1 ]
D'Alfonso, Giuseppe [1 ]
机构
[1] Univ Milan, Dipartimento Chim Inorgan Metallorgan & Analit, I-20133 Milan, Italy
关键词
Perfluoroaryl boranes; NMR spectroscopy; Lewis acids; Hydrogen bonds; Dynamical behaviour;
D O I
10.1016/j.ccr.2008.01.018
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
Multinuclear NMR spectroscopy has been used to study the solution properties of several perfluoroaryl borane derivatives. The information obtained from all the NMR active isotopes present in these molecules made it possible to establish not only chemical identity, structure and dynamics of their reaction products, but also the complexity of the solution speciation. In other words, multinuclear NMR helped in unravelling the real forms in which they are present in solution, that in some cases can change dramatically according to even slight changes of the solution conditions. Examples will be presented related to the chemistry of tris(pentafluorophenyl)borane, B(C6F5)(3), and bis(pentafluorophenyl)borinic acid, B(C6F5)(2)OH. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:2292 / 2313
页数:22
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