Synthesis and Complexation Studies of 1,3-Dialkylated P-Tert-Butylcalix[4]arene Telomers
Yükleniyor...
Dosyalar
Tarih
2000
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Science Bv
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
A series of cone structured lower rim dialkylated p-tert-butylcalix[4]arene (2a-5a) and their relative telomers (2b-5b) have been synthesized to estimate extraction of alkali and transition metal cations from an aqueous phase to an organic phase (dichloromethane). The complexation studies were made by using a liquid-liquid extraction procedure. It has been deduced from the observations that the monomers 2a, 3a and 5a are selective for Hg2+, whereas 4a is not selective but showed higher affinity towards transition metals than the alkali metal cations. The telomer 2b showed more affinity toward Cu2+, Hg2+ and Pb2+ but the telomer 3b is effective for Hg2+ and Pb2+. The telomers 4b and 5b are not selective but they are efficient extractants for the selected transition metal cations. The results indicate that the ligand groups circularly arranged on the lower rim of calixarene cavity form novel binding sites for transition metal cations.
Açıklama
Anahtar Kelimeler
calix[4]arene telomer, solvent extraction, alkali cations, transition metal cations
Kaynak
Reactive & Functional Polymers
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
44
Sayı
3
Künye
Memon, S., Yılmaz, M., (2000). Synthesis and Complexation Studies of 1,3-Dialkylated P-Tert-Butylcalix[4]arene Telomers. Reactive & Functional Polymers, 44(3), 227-233. Doi: 10.1016/S1381-5148(99)00097-8
