Observation of inter- and intramolecular C---H...F hydrogen bonding in Gingras' salt: [n-Bu4N]+[Ph3SnF2]-

The crystal and molecular structure of Gingras' salt [n-Bu₄N]^₊ [Ph₃SnF₂]⁻ is reported, which reveals a variety of inter- and intramolecular C---H...F hydrogen bonding interactions. A ¹¹⁹Sn MAS-NMR spectrum was recorded and a tensor analysis has been performed according to the method of Herzfeld and Berger. The results are discussed in terms of the molecular structure and are compared with the parent compound Ph₃SnF as well as with Mes₃SnF (Mes=mesityl).