Enhanced liquid–liquid anion exchange using macrocyclic anion receptors: effect of receptor structure on sulphate–nitrate exchange selectivity
作者:Bruce A. Moyer、Frederick V. Sloop、Christopher J. Fowler、Tamara J. Haverlock、Hyun-Ah Kang、Lætitia H. Delmau、Diadra M. Bau、Md Alamgir Hossain、Kristin Bowman-James、James A. Shriver、Nathan L. Bill、Dustin E. Gross、Manuel Marquez、Vincent M. Lynch、Jonathan L. Sessler
DOI:10.1080/10610271003763263
日期:2010.11.1
originates from sulphate binding by the anion receptors in the chloroform phase, it was possible to obtain reasonable fits to the sulphate distribution survey data based on the formation of 1:1 and 2:1 receptor:sulphate complexes in the chloroform phase. Apparent 1:1 sulphate-binding constants obtained from the model in this system fell in the range . Comparison of the results for the various anion receptors
当某些大环阴离子受体被添加到亲脂季铵盐(甲基三-C8,10-硝酸铵,Aliquat 336N)的硝酸盐形式的氯仿溶液中时,通过与有机物交换从硝酸钠水溶液中提取硫酸盐-相硝酸盐显着增强。调查了八个大环,包括四酰胺大环的两种衍生物,杯[4]吡咯的五种衍生物和β-十氟杯[5]吡咯的衍生物。在这种增强源于氯仿相中阴离子受体与硫酸盐结合的假设下,基于 1:1 和 2:1 受体:硫酸盐复合物在氯仿相中的形成,可以获得对硫酸盐分布调查数据的合理拟合。氯仿相。表观1:从该系统中的模型获得的 1 硫酸盐结合常数落在 范围内。对本研究中各种阴离子受体的结果进行比较表明,硫酸盐结合对母体大环支架上取代基的性质很敏感,其方式并非直接来自简单的化学预期,例如对氢键供体强度。