Polyoxaalkyl esters of phenylboronic acids as new podands

被引：9

作者：

Sporzynski, A.

Miskiewicz, A.

Gierczyk, B.

Pankiewicz, R.

Schroeder, G.

Brzezinski, B.

机构：

[1] Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland

[2] Warsaw Univ Technol, Fac Chem, PL-00664 Warsaw, Poland

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2006年 / 791卷 / 1-3期

关键词：

phenylboronic acids; oxaalkyl esters; H-1; NMR; C-13; Li-7; Na-23; ESI MS; complexes; stability constants; pseudo-crown structure;

D O I：

10.1016/j.molstruc.2006.01.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three oxaalkyl esters of phenylboronic acid and one oxaalkyl ester of phenyidiboronic acid have been synthesized and their ability to form complexes with Li+ and Na+ cations has been studied using multinuclear NMR, ESI mass spectrometric and PM5 semiempirical methods. It has been demonstrated that the esters of phenylboronic acid form 1: 1 complexes with Li+ and Na+ cations whereas the ester of phenyldiboronic acid can additionally form complexes of 1:2 stoichiometry. The stability constants of these complexes have been determined to show that with increasing number of oxygen atoms in the oxaalkyl chains the complexes of increasing stability are formed. The exemplary 1: 1 and 1:2 structures of the complexes of esters with Li+ and Na+ cations, respectively, are given. They show that the cations are coordinated within a pseudo-crown structures formed by oxaalkyl chains. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：111 / 116

页数：6

共 16 条

[1] COLLECTIVE H+, LI+, AND NA+ MOTIONS AND CATION POLARIZABILITIES OF THE CATION-BONDED SYSTEMS WITHIN 1,11,12,13,14-PENTAHYDROXYPENTACENE SALTS - A FTIR STUDY [J].