The preparation and properties of neutral diamide ionophores for group IIA metal cations-II
作者:Irving J. Borowitz、Josephine D. Readio、Ven-shun Li
DOI:10.1016/s0040-4020(01)91239-6
日期:1984.1
cations as determined by Simon . (ETH Zurich) are reported. Selectivity ratios of over 100:1 for Na vs Ca were found for several piperidenyl amides of 1,2-phenylenedioxydiacetic acid. Incorporation of N-methylamino instead of ether oxygen groups into the basic structure gives a stronger cation binder which is still selective for Group IIA vs Group IA cations but with binding capacity for transition metal
描述了一系列具有邻位醚和N,N-二烷基乙酰胺基的中性配体的制备。这些配体中的几个在其敏感的IIA组阳离子的甲醇中带有K app = 10 3 -10 5。据报道,通过Scatchard方法的结合常数对于许多主要与Ca,Sr,Mn和Ba的配体是一致的。二氯甲烷溶液中的配体通过其苦味酸盐从水中提取这些阳离子。电化学K ij锅当某些配体结合到液膜电极中并用西蒙(Simon)测定的各种阳离子测试时的(选择性)值。(ETH Zurich)。对于1,2-苯二氧基二乙酸的几种哌啶基酰胺,发现Na与Ca的选择性比超过100:1。将N-甲基氨基而不是醚氧基团结合到基本结构中会得到更强的阳离子结合剂,该结合剂对IIA族和IA族阳离子仍然具有选择性,但对过渡金属阳离子也具有结合能力。讨论了这些配体的Scatchard图的局限性以及电化学选择性与单一液相中阳离子结合顺序的不对应关系。