No abstract

In the title molecular salt, (C5H7N2)2[SnCl6], the cation is protonated at the pyridine N atom and the complete dianion is generated by a crystallographic centre of symmetry. In the crystal, N—H...Cl hydrogen bonds link the components into a three-dimensional network built up from the stacking of alternate cationic and anionic layers. The nature of the intermolecular interactions has been analysed in terms of the Hirshfeld surfaces of the cations and the anions. The thermal behaviour and the Raman spectrum of the title compound are reported.

The title hybrid compound, (C5H5N2Cl2)2[SnCl6]·2H2O, was synthesized and its structure was identified by single-crystal X-ray diffraction. The structure is non-polymeric (0D) in terms of containing isolated [SnCl6]2− polyhedra. The special position (0,0,0) of the SnIV atom in the crystal structure gives rise to a stacking structure with alternating cationic and anionic layers parallel to (001). The water molecules are intercalated between these layers, which are linked by cation–anion hydrogen bonds and dominant non-covalent interactions. The stability of the three-dimensional network for this compound is also discussed.

In the title hydrated molecular salt {systematic name: 4-[amino(iminiumyl)methyl]pyridin-1-ium hexachloridostannate(IV) dihydrate}, (C6H9N3)[SnCl6]·2H2O, the tin atom lies on a crystallographic inversion centre and the organic cation shows whole-molecule disorder. Numerous N—H...O, N—H...Cl and O—H...Cl hydrogen bonds link the components in the crystal.