Equilibria of complex formation between bivalent metal ions and 3,3'-bis[N,N'-bis(carboxymethyl)aminomethyl]-o-cresolsulfonphthalein.
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概要
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The complex formation equilibria between several bivalent metal ions and 3,3′-bis[<I>N</I>,<I>N</I>′-bis(carboxymethyl)aminomethyl]-<I>o</I>-cresolsulfonphthalein (XO) have been investigated potentiometrically and spectrophotometrically. The metal ions studied here were Co(II), Ni(II), Cu(II), Zn(II), Pb(II), and Cd(II). The formation constants and visible-absorption-spectrum parameters of these metal complexes have been determined. It has been found that all these metal ions form 1:1 and 2:1 (metal: XO) complexes with XO. Moreover, the complex of each composition changes into one of several protonated ones depending on the pH of the solution. The probale structures of the complexes in solution are discussed.
- 公益社団法人 日本化学会の論文
著者
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Ogura Kotaro
Department Of Applied Chemistry Faculty Of Engineering Yamaguchi University
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Yoshino Takashi
Department Of Bioengineering Faculty Of Engineering Kagoshima University
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MURAKAMI Sadaaki
Department of Chemical Technology
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