S2O2 donor cyclic and acyclic ionophores: Potentiometric sensing for Ag(i) and a new nitrate-bridged dimeric Ag(i) complex of the acyclic ionophore with an unusual structureElectronic Supplementary Information available. See http://www.rsc.org/suppdata/an/b1/b105136a/

Abstract

Novel isomeric macrocycles II–IV incorporating an S₂O₂ donor set and the analogous acyclic ionophore I were tested for silver(I) ion-selective electrodes. The electrodes based on the acyclic ionophore I were found to give better electrochemical performances than their counterparts. In addition, an unusual X-ray crystal structure of a nitrate-bridged dimeric complex with silver(I) ion, [Ag₂(I)₂(NO₃)](PF₆), was characterized.