A series of mu(2)-fluoro-bridged heteronuclear bidentate Lewis acid complexes [K(18-crown-6)THF](+) [Fc(BMeF)(SnMe2Cl)F](-)(1-2F), [K(18-crown-6)THF](+) [Fc(BMeF)(SnMe2F)F](-) (1-3F), [K(18-crown-6)THF](+) [Fc(BMePh)(SnMe2Cl)F](-) (2-F), and [K(18-crown-6)THF](+) [Fc(BMePh)(SnMe2F)F](-) (2-2F) (Fc = 1,2-ferrocenediyl) was prepared. Compounds 2-F and 2-2F were obtained as a mixture of diastereomers, which arise due to the generation of a stereocenter at boron in addition to their inherent planar chirality. All compounds have been studied in the solid state by single-crystal X-ray diffraction analysis and by multinuclear NMR spectroscopy in solution. As a result of bridging-fluoride interactions, tetrahedral boron and distorted trigonal-bipyramidal tin centers are observed. Comparison with the corresponding monofunctional ferrocenylborates further supports the bridging nature of the fluoride anion. Two-dimensional exchange spectroscopy F-19 NMR studies provide evidence for facile intermolecular and intramolecular fluorine exchange processes. All complexes display reversible one-electron oxidation events at lower potentials than those of the tricoordinate ferrocenylborane precursors, which is typical of ferrocenylborate complexes.