Asymmetric [N–I–N]+ halonium complexes in solution?. Issue 92 (4th November 2020) - von der Heiden, Daniel
Abstract : Assessment of the solution equilibria of [bis(pyridine)iodine(i )] + complexes by ESI-MS and NMR reveals a statistical ligand distribution across the iodine(i ) centres with a preference to form complexes with a more basic pyridine. Abstract : Assessment of the solution equilibria of [bis(pyridine)iodine(i )] + complexes by ESI-MS and NMR reveals the preference of iodine(i ) to form complexes with a more basic pyridine. Mixtures of symmetric [bis(pyridine)iodine(i )] + complexes undergo statistical ligand exchange, with a predominant entropic driving force favoring asymmetric systems. The influence of ligand basicity, concentration, temperature, and ligand composition is evaluated. Our findings are expected to facilitate the investigations, and the supramolecular and synthetic applications of halonium ions' halogen bonds.