Solvent extraction of 8-quinolinolato-iron(III) with the aid of various phenols as hydrogen-bonding donors.
Solvent extraction of 8-quinolinolato-iron(III) with the aid of various phenols as hydrogen-bonding donors.
复制标题
借助各种酚类作为氢键供体，溶剂萃取 8-羟基喹啉铁 (III)。
DOI：
10.1016/0039-9140(93)80327-n
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发表时间：
1993
期刊：
影响因子：
6.1
通讯作者：
N. Suzuki
中科院分区：
文献类型：
--
作者：
S. Katsuta;N. Suzuki
研究了不同酚类（ArOh）对8-喹啉醇（HQ）溶剂萃取铁（III）的影响。在ArOh的存在下，提取率大大提高，例如。，加入0.1 m3,5-二氯苯酚，使铁（III）与HQ在四氯化碳中的分布比提高20万倍。萃取平衡分析表明，萃取增强是由于中性铁（III） 8-喹啉酸酯（FeQ3）与ArOH在有机相中形成了FeQ3·nArOH （n= 1,2,3）的缔合配合物，并确定了缔合常数（βass,n）。β β的对数值与ArOH的酸解常数呈线性关系。红外光谱显示feq3与ArOH之间存在氢键。
Effect of various phenols (ArOh) on the solvent extraction of iron(III) with 8-quinolinol (HQ) has been investigated. Greatly enhanced extraction is found in the presence of ArOh,e.g., the distribution ratio of iron(III) with HQ in carbon tetrachloride is increased 200,000-fold by 0.10M3,5-dichlorophenol. From extraction equilibrium analysis, the enhanced extraction has been ascribed to the formation of association complexes of neutral iron(III) 8-quinolinolate (FeQ3) with ArOH as FeQ3·nArOH (n= 1, 2,3) in the organic phase, and the association constants (βass,n) have been determined. A linear relation is observed between logarithmic values of βass,nand the acid-dissociation constant of ArOH. Existence of the hydrogen bond between FeQ3and ArOH is clearly shown by infrared spectroscopy.