Abstract − Analytical Sciences, 19(2), 321 (2003).
"Substituent on Benzenesulfonyl Group" Effect in Use of 8-Benzenesulfonamidoquinoline Derivatives as Chelate Extractant
Naoki HIRAYAMA,* Noriko SUGISAKA,** Junko TAGA,** Syunichi OSHIMA,*** and Takaharu HONJO*
*Department of Chemistry, Faculty of Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
**Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
***Division of Basic Sciences, Graduate School of Natural Science and Technology, Kanazawa University,Kakuma-machi, Kanazawa 920-1192, Japan
**Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
***Division of Basic Sciences, Graduate School of Natural Science and Technology, Kanazawa University,Kakuma-machi, Kanazawa 920-1192, Japan
"Substituent on benzenesulfonyl group" effect of 8-benzenesulfonamidoquinoline [N-(8-quinolyl)benzenesulfonamide, Hbsq] as bidentate chelate extractant for divalent metal cations was investigated with using Hbsq and its eight derivatives. Introduction of electron-withdrawing substituent on the benzenesulfonyl group in Hbsq enhanced the extractability that originated from its inductive effect. Furthermore, a bulky substituent on an ortho-position of the benzenesulfonyl group resulted in no steric effect in extraction, whereas the existence of two substituents on each ortho-position caused lower extraction performance due to steric hindrance.
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