Takeo Sakai, Masanari Ota, Miho Ito, Riho Miura, Yuto Fumimoto, Yuji Mori
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引用次数: 0
摘要
使用四氰合环戊二烯（TCCPs）进行离子对萃取是分离铵阳离子的有效方法；然而，预测铵-TCCP 离子对的可萃取性是一项挑战。在本文中，通过测量铵-TCCP 离子对的萃取系数（LogKex），可以确定 TCCP 阴离子的 A 值（阴离子萃取指数）（-3.1 至-1.4）；这些值分别高于高氯酸根阴离子和苦味酸根阴离子的 A 值，也与它们相似。LogKex 与铵阳离子的 A 值和计算的 Log P 值之和的相关性表明，LogKex 可通过公式 LogKex = A + CLOGPNR4 + 1.6 估算，其中 CLOGPNR4 是使用 "无加 "铵结构获得的 CLOGP 值。LogKex 值可用于预测季铵盐离子的萃取性。
Ion-Pair Extraction with Tetracyanocyclopentadienides: A Method for Estimating Extraction Efficiency.
Ion-pair extraction with tetracyanocyclopentadienides (TCCPs) is an effective method for isolating ammonium cations; however, predicting the extractability of ammonium-TCCP ion pairs is challenging. Herein, the measured extraction coefficients (LogKex) of ammonium-TCCP ion pairs allowed the values of A (an index for anion extractability) for the TCCP anions to be determined (-3.1 to -1.4); these values were higher than and similar to those of perchlorate and picrate anions, respectively. The correlation between LogKex and the sum of the values of A and the calculated Log P of ammonium cations revealed that LogKex can be estimated by the equation LogKex = A + CLOGPNR4 + 1.6, where CLOGPNR4 is the CLOGP value obtained using the "no-plus" ammonium structure. The LogKex value can be used to predict the extractability of quaternary ammonium ions.
期刊介绍：
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