Solvent Extraction of Fe3+ Cation by Diazo-Coupling Calix[4]arenes

Authors : Hasalettin DELĞGÖZ, Emin ERDEM

Pages : 157-164

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The solvent extraction of Fe3+ cations from the aqueous to the organic insert ignore into journalissuearticles values(chloroform); phase was carried out using p-tert-butyl calix[4]areneinsert ignore into journalissuearticles values(\underline{1});, calix[4]areneinsert ignore into journalissuearticles values(\underline{2});, diazo-coupling calix[4]arenes [p-insert ignore into journalissuearticles values(4-n-butyl-phenylazo);calix[4]arene insert ignore into journalissuearticles values(\underline{3});, p-insert ignore into journalissuearticles values(4-phenylazophenylazo);calix[4]areneinsert ignore into journalissuearticles values(\underline{4});, p-insert ignore into journalissuearticles values(4-acetanilidazo);calix[4]areneinsert ignore into journalissuearticles values(\underline{5});, p-insert ignore into journalissuearticles values(N`-2-thyazol-2ylsulphanylazo);calix[4]areneinsert ignore into journalissuearticles values(\underline{6}); and p-insert ignore into journalissuearticles values(2-thyazolazo);calix[4]areneinsert ignore into journalissuearticles values(\underline{8}); and the derivatives of phenol [2-insert ignore into journalissuearticles values(5-bromo-2-pyridylazo);-5-diethylaminophenolinsert ignore into journalissuearticles values(\underline{8}); insert ignore into journalissuearticles values(Bromo-PADAP); and 2-hydroxy-5-methyl\-phenylazonaptholinsert ignore into journalissuearticles values(\underline{9}); insert ignore into journalissuearticles values(HMPAN);]. It was found that the compounds insert ignore into journalissuearticles values(\underline{1}-\underline{9}); showed the highest extractability toward Fe3+ at pH 4.5-5.4 Compound \underline{5} shows strong binding ability to Fe3+ ion. Based on the method of continuous variation, calixarene \underline{5} formed a 1:1 complex with Fe3+ ion.
Keywords : Turk J Chem, 24, 2000, 157 164 Turk J Chem, vol 24, iss 2