Noncovalent paramagnetic complexes: detection of halogen bonding in solution by ESR spectroscopy |
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| Authors: | Veronica Mugnaini Rosalba Liantonio Francesco Recupero Gian Franco Pedulli |
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| Affiliation: | a Department of Organic Chemistry ‘A. Mangini’, University of Bologna, via S. Giacomo 11, I-40126 Bologna, Italy
b Polytechnic of Milan, Department of Chemistry, Materials, and Chemical Engineering ‘G. Natta’, Via Mancinelli 7, I-20131 Milano, Italy |
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| Abstract: | Halogen-bonded complexes between aliphatic and aromatic iodoperfluorocarbons and persistent nitroxide radicals have been detected by ESR spectroscopy in solution. Quantitative data indicate that nitroxides behave as strong electron donors in halogen bonding, giving rise to interactions whose strength is close to that of strong hydrogen bonds. These results point to a novel design of supramolecular paramagnetic species. |
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