Lewis acidity of tris(pentafluorophenyl) borane:: crystal and molecular structure of B(C6F5)3•OPEt3

被引：177

作者：

Beckett, MA ^{[1
]}

Brassington, DS

Coles, SJ

Hursthouse, MB

机构：

[1] Univ Coll N Wales, Dept Chem, Bangor LL57 2UW, Gwynedd, Wales

[2] Univ Southampton, Dept Chem, Southampton SO17 1BJ, Hants, England

来源：

INORGANIC CHEMISTRY COMMUNICATIONS | 2000年 / 3卷 / 10期

基金：

英国工程与自然科学研究理事会;

关键词：

acceptor number; borane; Lewis acidity; X-ray structure; organophosphine oxide;

D O I：

10.1016/S1387-7003(00)00129-5

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The synthesis and characterisation (TP, multielement NMR spectroscopy) of B(C6F5)(3). L {L = CH3CO . OEt (1), Et3PO (2)} are described together with a single-crystal X-ray diffraction study of 2. The latter reveals an angular B-O-P linkage {161.04(16)degrees} with BO and PO bondlengths of 1.533(3) and 1.4973(17) Angstrom, respectively. Lappert's Delta nu(CO) and Gutmann's acceptor number (AN) methods have been applied to 1 and 2 to assess the relative Lewis acidity of B(C6F5)(3) which is confirmed as weaker than BF3. A strong linear correlation has been obtained for Gutmann's AN and Childs' H-1 NMR Lewis acidity scales. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：530 / 533

页数：4

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