Complementary anion binding by bidentate boron-containing Lewis acids

被引：13

作者：

Coombs, ND ^{[1
]}

Aldridge, S ^{[1
]}

Wiltshire, G ^{[1
]}

Kays, DL ^{[1
]}

Bresner, C ^{[1
]}

Ooi, LL ^{[1
]}

机构：

[1] Univ Wales Coll Cardiff, Sch Chem, Ctr Fundamental & Appl Main Grp Chem, Cardiff CF10 3AT, S Glam, Wales

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 2005年 / 690卷 / 11期

关键词：

D O I：

10.1016/j.jorganchem.2005.01.015

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Anion binding by the pyroborates (catB)(2)O (1, cat = O2C6H4-1,2) and (S,S-Ph2C2H2O2B)(2)O (2) has been investigated by spectroscopic, structural and titration methods. 1 has been shown to act as a bifunctional Lewis acid, exemplified by the complementary (1:1) binding of bidentate bases such as acetate and dihydrogen phosphate. The former complex has been characterized in the solid state by X-ray diffraction and a binding constant of 1500 +/- 550 M-1 determined in chloroform solution. The reaction of 2 with acetate, by contrast, leads to breakdown of the Lewis acid chelate and to the formation of the homochiral borate anion [(S,S-Ph2C2H2O2)(2)B](-) in good yield (84% based on the chiral component). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：2725 / 2731

页数：7

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