Asymmetric [N–I–N]+ halonium complexes in solution??
Chemical Communications Pub Date: 2020-10-27 DOI: 10.1039/D0CC06706G
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.
![Graphical abstract: Asymmetric [N–I–N]+ halonium complexes in solution?](http://scimg.chem960.com/usr/1/D0CC06706G.jpg)
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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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