Synthesis of calix[4]crowns containing soft donor atoms and a study of their metal-cation binding properties: Highly selective receptors for Cu2+
Two new calix[4]arenethiacrown derivatives 1 and 2 in the cone conformation were synthesized by two different pathways in good yield. Their complexation properties toward alkali, alkaline earth and transition metal cations were studied in acetonitrile at 298.15 K using a conductometric titration technique. The selectivity for Cu2+ over other cations with these novel ligands was excellent.
Ashram, Muhammad
p. 1662 - 1668
(2007/10/03)
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