Spectrophotometric studies of alkali and alkali earth metal ions complexes of mono amino derivative of calix[4]arene
作者:Farrokh Gharib、Noushin Osouleddini、Karim Zare、Saeed Taghvaei-Ganjali
DOI:10.1134/s003602361003023x
日期:2010.3
The synthesis and complexive abilities of 5,11,17-tris(tert-butyl)-23 amino-25,26,27,28-tetra-propoxycalix[4]arene towards alkali cations Li(+), Na(+), K(+), Rb(+), Cs(+) and alkali earth cations Mg(2+), Ca(2+), Sr(2+) and Ba(2+) in methanol-chloroform mixture have been evaluated at 25A degrees C, using UV-Vis spectrophotometric techniques. The results showed that the ligand is capable to complex with all the cations by 1: 1 metal to ligand ratios. The selectivity presented considering the calculated formation constants are in the order Li(+) > Na(+) > K(+) > Rb(+) > Cs(+) and Mg(2+) > Ca(2+) > Sr(2+) > Ba(2+) with the ligand.