EXTRACTION BEHAVIOR OF COPPER(II) ION BY CALIXARENE CARBOXYLATE DERIVATIVES PREORGANIZED BY SODIUM ION

Keisuke OHTO Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo, Saga|840, Japan.

Koji SHIRATSUCHI Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo, Saga|840, Japan.

Katsutoshi INOUE Department of Applied Chemistry, Faculty of Science and Engineering, Saga University, Honjo, Saga|840, Japan.

Masahiro GOTO Departmentof Chemical Science and Technology, Faculty of Engineering, Kyushu University, Hakozaki, Fukuoka, 812, Japan.

Fumiyuki NAKASHIO Departmentof Chemical Science and Technology, Faculty of Engineering, Kyushu University, Hakozaki, Fukuoka, 812, Japan.

Seiji SHINKAI Departmentof Chemical Science and Technology, Faculty of Engineering, Kyushu University, Hakozaki, Fukuoka, 812, Japan.

Takeshi NAGASAKI Departmentof Bioapplied Chemistry, Faculty of Engineering, Osaka City University, Sugimoto, Osaka, 558, Japan.

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ABSTRACT

The extraction equilibrium of sodium ion with 25,27-bis(carboxymethoxy)-26,28-bis(carboxyprorx3xy)-5,11,17,23-tetrakis(l,l,3,3-tetramethvlbutyl)calix[4]-arene and 25,26,27,28-tetrakis(carboxymethoxy)-5,ll,17,23-tetrakis(l,l,3,3-tetramethylbutyl)calix[4]arene has been studied by means of 'H-NMR spectrometry. The extraction equilibria of copper (II) ion with the above extractants have also been investigated in the absence or presence of sodium ion to clarify the extraction mechanism and the effect of the coexisting sodium ion on copper ion.

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EXTRACTION BEHAVIOR OF COPPER(II) ION BY CALIXARENE CARBOXYLATE DERIVATIVES PREORGANIZED BY SODIUM ION

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EXTRACTION BEHAVIOR OF COPPER(II) ION BY CALIXARENE CARBOXYLATE DERIVATIVES PREORGANIZED BY SODIUM ION

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