Liquid-liquid extraction of some class b metal ions with a thiacrown compound, 1,4,7,10,13,16-hexathiacyclooctadecane.
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概要
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The liquid–liquid extraction of various metal ions, especially of soft class <I>b</I> metal ions with a thiacrown compound, 1,4,7,10,13,16-hexathiacyclooctadecane (HTCO) using picrate ion (Pic<SUP>−</SUP>) was examined and compared with that of 1,4,8,11-tetrathiacyclotetradecane (TTCT). Although the extraction behavior of the class <I>a</I>, <I>ab</I>, and <I>b</I> metals with HTCO is fundamentally similar to that with TTCT, that of some metals belonging to class <I>b</I> metals with HTCO is different from that with TTCT. The extraction percentages of copper(II) and palladium(II) with HTCO are a few times larger than those with TTCT. Copper(I) and silver(I) are extracted with HTCO as the 1 : 1 complexes such as [Cu(htco)]<SUP>+</SUP>Pic<SUP>−</SUP> and [Ag(htco)]<SUP>+</SUP>Pic<SUP>−</SUP>, respectively, regardless of the relative concentration of the ligand to the metal. On the other hand, copper(I) and silver(I) complexes with TTCT are extracted with different compositions depending upon the relative concentration of the ligand to the metal.
- 公益社団法人 日本化学会の論文
著者
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Kawahara Hideo
Department Of Mechanical Engineering Yamaguchi University
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Sekido Eiichi
Department of Chemistry, Faculty of Science, Kobe University
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Tsuji Kaoru
Department of Chemistry, Faculty of Science, Kobe University
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Kawahara Hideo
Department of Chemistry, Faculty of Science, Kobe University
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