In thecrystal structure of 1, there are four C-H F intermolecular interactions [C9-H9B F8, C16-H16 F3, C2-H2 F2 and C19-H19 F5] that connect the cations and anions along all crystallographic axes (Fig. 5a). The H atoms of the deuterated 1/3 H2O molecule could not be located in the difference map. No strong hydrogen bonding interaction is observed for 2. The crystal structure of compound 2 has five fairly strong C-H...F intermolecular interactions and two C-H...O hydrogen bond interactions, in which the O atom of the acetone molecule acts as the hydrogen bond acceptor (Fig. 5b). The two C-H...O intermolecular interactions connect the cationic molecules resulting in chains down the crystallographic c-axis (Fig. 5c).