ABSTRACT
In the title inorganic mol-ecular salt, (N2H5)2SiF6, the silicon atom at the centre of the slightly distorted SiF6 octa-hedron [range of Si-F distances = 1.6777â (4)-1.7101â (4)â Å] lies on a crystallographic inversion centre. In the crystal, the ions are connected by N-Hâ¯N and N-Hâ¯F hydrogen bonds; the former link the cations into [010] chains and the latter (some of which are bifurcated or trifurcated) link the ions into a three-dimensional network. The two-dimensional fingerprint plots show that Fâ¯H/Hâ¯F inter-actions dominate the Hirshfeld surface (75.5%) followed by Hâ¯H (13.6%) and Nâ¯H/Hâ¯N (8.4%) whereas Fâ¯F (1.9%) and Fâ¯N/Nâ¯F (0.6%) have negligible percentages. The title compound is isostructural with its germanium-containing analogue.