While it may be a general perception that strong Lewis acidity is the preserve of group 13 elements, the pioneering work of Olah shows that this property can also be expressed in the group 15, especially with antimony. As part of our continuing interest in the chemistry of main group Lewis acids, we have now chosen to investigate the Lewis acidic behavior of organoantimony(V) species and will report a series of results showing that these derivatives can be used for anion sensing in protic solvents including water.1,21) Ke, I.-S.; Myahkostupov, M.; Castellano, F. N.; Gabba�, F. P. 'Stibonium Ions for the Fluorescence Turn-On Sensing of F� in Drinking Water at Parts per Million Concentrations' J. Am. Chem. Soc. 2012  , 134, 15309-15311.2) Wade, C. R.; Gabbai�, F. P. 'Fluoride Anion Chelation by a Bidentate Stibonium�Borane Lewis Acid' Organometallics 2011 , 30, 4479-4481.

Lewis acidic properties of organo-antimony compounds: New opportunities in anion sensing

245th National Meeting (2013)

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