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    Solvent extraction of Fe3+ cation by 25,26,27,28-tetraisonitrosoaceto calix[4]arene and based ligands
    (MARCEL DEKKER INC, 1999) Deligoz, H; Pekacar, AI; Ozler, MA; Ersoz, M
    25,26,27,28-Tetraisonitrosoaceto calix[4]arene [L-8] was synthesized by reacting 25,26,27,28-tetraacetyl calix[4]arene [L-7] with n-butyl nitrite. The synthesized compounds [L-7, L-8] and based ligands (p-tert-butyl phenol [L-1], p-methoxy phenol [L-2] p-methyl aldoxime [L-3], p-methoxy glyoxime [L-4], p-tert-butyl calix[4]arene [L-5], and calix[4]arene [L-6]} were utilized for solvent extraction of Fe3+ cations from the aqueous phase to the organic phase. It was observed that the p-methoxy glyoxime [L-4] and oximated derivative of calix[4]arene are more efficient carriers of Fe3+ in the extraction process at pH 2.2.