Synthesis and dichromate anion extraction ability of p-tert-butylcalix[4]arene diamide derivatives with different binding sites |
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Authors: | Aydan Yilmaz Begum Tabakci Ezgi Akceylan Mustafa Yilmaz |
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Institution: | Selçuk University, Department of Chemistry, 42031 Konya, Turkey |
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Abstract: | The article describes the synthesis and evaluation of the dichromate anion (Cr2O72−/HCr2O7−) extraction properties of p-tert-butylcalix4]arene diamide derivatives (5-7) containing different binding sites. Among these compounds, 6 and 7 have been synthesized via aminolysis in a toluene-methanol solvent system with 3-aminomethylpyridine and 3,6-dioxa-1,8-diamino octane, respectively. On the other hand, compound 5 has been synthesized via an acid chloride method due to its inefficiency under aminolysis. The extraction properties of these diamides toward dichromate anions are studied by liquid-liquid extraction. The results show that p-tert-butylcalix4]arene diamide derivative 7 exhibited a much higher affinity toward dichromate anions than that of 6 due to its special structure, while 5 was an ineffective ligand for these anions. |
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Keywords: | p-tert-Butylcalix[4]arene Diamide Dichromate anions Extraction |
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