Rapid capture of 4,13-diaza-18-crown-6 molecules by p-sulfonatocalix[4]arene in the presence of trivalent lanthanide ions
Abstract
4,13-Diaza-18-crown-6 in the presence of aquated trivalent lanthanide ions and p-sulfonatocalix[4]arene results in a ‘molecular capsule’ type arrangement with two 4− charge