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    The Syntheses and Characterization of Three Novel Macrocyclic Polyether Ligands and Some of Their Alkaline Metal Complexes
    (JIHAD DANESHGAHI, 2008) Ertul, Seref; Bayraki, Mevlut; Beduk, A. Dincer
    The macrocyclic ligands 2,3,5,6-Bis{3'-bromo-5'-tert-butyl benzo-5-phenyl benzo} 12C3 (L-1), 2,3,5,6-bis{3'-bromo-5'-tert butyl-benzo-5'-phenyl-benzo} 15C4 (L-2), 2,3,5,6-bis{3'-bromo-5'-tert butyl-benzo-5'-phenyl-benzo} 18C5 (L-3) have been synthesized and their alkaline metal compounds with NaClO4 center dot H2O and KClO4 have been prepared. Chemical formulas of all compounds have been characterized by using elemental analyses and spectroscopic techniques.
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    Synthesis and application of an efficient calix[4]arene-based anion receptor bearing imidazole groups for Cr(VI) anionic species
    (PERGAMON-ELSEVIER SCIENCE LTD, 2012) Tabakci, Mustafa; Tabakci, Begum; Beduk, A. Dincer
    We synthesized the new calix[4]arene amines bearing two and four imidazole or tert-butylamine moieties (9a,b/10a,b) by the reaction of di-or tetra-tosylated calix[4]arene derivatives (7 and 8, respectively) with 1-(3-aminopropyl)imidazole and/or tert-butylamine, respectively. After the characterization of 9a,b/10a,b their extraction abilities toward Cr(VI) anionic species (CAS) was evaluated and compared by the liquid liquid extraction method. The extraction results revealed that calix[4]arene amine having four imidazole groups (10a) was an efficient anion receptor for CAS. Moreover, the extraction of CAS by 10a in the presence of other anions such as Cl-, NO3-, and PO43- showed that 10a could be a selective anion receptor for CAS in the presence of those anions. (C) 2012 Elsevier Ltd. All rights reserved.
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    Synthesis of macrocyclic polyethers and polyether diesters and preparation of their cationic complexes
    (VERSITA, 2008) Ertul, Seref; Beduk, A. Dincer; Bayrakci, Mevluet; Guler, Ersin
    New macrocyclic polyethers, 2,3,5,6-bis-[5'(5')-chlorobenzo]-1,7,10-trioxacyclododeca-2,5-diene (I), 2,3,5,6-bis-[5'(5')-chlorobenzo]-1,7,10,13-tetra oxacyclo pentadeca-2,5-diene (II), and 2,3,5,6-bis-[5'(5')-chlorobenzo]-1,7,10,13,16-penta oxa cyclo octadeca-2,5-dien (III), and macrocylic lactones 2,3,5,6-bis-[5'(5')-chlorobenzo]-1,7,10,13-tetraoxacyclopentadeca-2,5-diene-8,15-dione (IV) and 2,3,5,6-bis[5'(5')-chlorobenzo]-1,7,10,13,16-pentaoxacyclooctadeca-2,5-diene-8,18-dione (V) were synthesized. Complexes of ligands III and V with metal cations were prepared. Furthermore, their metal-picrate extraction with some metal salts was attempted. Structures of the ligands and complexes were confirmed using spectroscopic techniques. (C) 2008 Institute of Chemistry, Slovak Academy of Sciences