S_2O_2 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 structure

摘要

Novel isomeric macrocycles II-IV incorporating an S_2O_2 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, [Ag_2(I)_2(NO)_3](PF_6), was characterized.