Synthesis and dichromate anion extraction ability of p-tert-butylcalix[4]arene diamide derivatives with different binding sites
Küçük Resim Yok
Tarih
2007
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
PERGAMON-ELSEVIER SCIENCE LTD
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The article describes the synthesis and evaluation of the dichromate anion (Cr2O72-/HCr2O7-) extraction properties of p-tert- butylcalix[4]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-butylcalix[4]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. (c) 2007 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
p-tert-butylcalix[4]arene, diamide, dichromate anions, extraction
Kaynak
TETRAHEDRON
WoS Q Değeri
Q1
Scopus Q Değeri
Q2
Cilt
63
Sayı
23
