Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 21, Issue 7, Pages 2961-2965Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201404505
Keywords
bromine; ionic liquids; polybromide anions; Raman spectroscopy; X-ray crystallography
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Funding
- Australian Research Council
- Henry Bertie and Florence Mabel Gritton bequest (MEE)
- RedFlow, Ltd.
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An unprecedented diversity of high-order bromine catenates (anionic polybromides) was generated in a tetraalkylphosphonium-based room temperature ionic liquid system. Raman spectroscopy was used to identify polybromide monoanions ranging from [Br-5](-) to [Br-11](-) in the bulk solution, while single-crystal X-ray diffraction identified ex-tended networks of linked [Br-11](-) units, forming a previously unknown polymeric [Br-24](2-) dianion. This represents the largest polybromide species identified to date. In combination with recent work, this suggests that other, higher order molecular polybromide ions might be isolated.
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