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Influence of Elemental Iodine on Imidazolium-Based Ionic Liquids: Solution and Solid-State Effects.

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Fei Zhaofu, Bobbink Félix D, Păunescu Emilia, Scopelliti Rosario, Dyson Paul J,
Project Turning functionalised ionic liquids into functional materials for catalysis and other applications
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Original article (peer-reviewed)

Journal Inorganic chemistry
Volume (Issue) 54(21)
Page(s) 10504 - 12
Title of proceedings Inorganic chemistry
DOI 10.1021/acs.inorgchem.5b02021


Ionic liquids doped with I2, usually resulting in the formation of polyiodide anions, are extensively used as electrolytes and in iodination reactions. Herein, NMR spectroscopy and single-crystal X-ray diffraction were used to rationalize the structures of imidazolium-based polyiodide ionic liquids in the liquid and solid states. Combined, these studies show that extensive interactions between the imidazolium cation and the resulting polyiodide anion are present, which have the net effect of lengthening, polarizing, and weakening the I-I bonds in the anion. This bond weakening rationalizes the high conductivity and reactivity of ionic liquids doped with I2.