Inhibition of Dimerization of Copper(II) Carboxylates by Cyclohexane Ring in Extraction of Copper(II) with Cyclohexanecarboxylic Acid
作者:Hiromichi Yamada、Miyuki It\={o}、Masateru Mizuta
DOI:10.1246/bcsj.60.3557
日期:1987.10
The extraction of copper(II) with cyclohexanecarboxylic acid in benzene was carried out at 25 °C and at the aqueous ionic strength of 0.1 mol dm−3 (NaClO4). The partition constant, KD,HA of cyclohexanecarboxylic acid between benzene and water, and the dimerization constant, K2,HA of cyclohexanecarboxylic acid in benzene were determined: logKD,HA=0.90 and logK2,HA=1.54, respectively. The monomeric and
在苯中用环己烷甲酸萃取铜 (II) 在 25 °C 和 0.1 mol dm-3 (NaClO4) 的水溶液离子强度下进行。测定环己烷甲酸在苯和水之间的分配常数KD,HA和苯中环己烷甲酸的二聚常数K2,HA分别为logKD,HA=0.90和logK2,HA=1.54。单体和二聚体环己烷羧酸铜 (II) 负责提取:Cu2++(HA)2,o \ightleftharpoons (CuA2)o+2H+Cu2++2(HA)2,o \ightleftharpoons (CuA2(HA)2) o+2H+2Cu2++2(HA)2,o \ightleftharpoons (Cu2A4)o+4H+2Cu2++3(HA)2,o \ightleftharpoons (Cu2A4(HA)2)o+4H+,提取常数, logKex(10)=−8.34, logKex(12)=−7.33, logKex(20)=−12