INOR 244 |
| Owing to their ability to chelate various nucleophiles, bidentate Lewis acids have recently assumed important roles in anion recognition in general and as fluoride sensing materials in particular. We have synthesized the fluoride complexes of ferrocene based bidentate Lewis acids 1 and 2 by treatment with KF in the presence of 18-crown-6. Multinuclear NMR studies and single crystal x-ray analysis confirmed the simultaneous coordination of the fluoride anion to both boron and tin centers in the solid state as well as in solution. Fluoride complexes of compound 2 exist as two distinguishable diastereomers. Fluoride exchange between these diastereomers was further studied by 19F-19F 2D-EXSY NMR spectroscopy.
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Main Group Chemistry
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Inorganic Chemistry |
