Bis(cytosinium) hexachlorostannate(IV)

The asymmetric unit of the title compound, (C4H6N3O)2[SnCl6], contains one cytosinium cation and half a [SnCl6]2− anion, the anion lying on an inversion centre. The structure can be described as alternating layers of cytosinium and hexa­chloro­stannate ions along the c axis. The packing is stabilized by N—H⋯Cl and N—H⋯O hydrogen bonding, resulting in the formation of a two-dimensional network.