Butane-1,4-di­ammonium hexa­fluoro­silicate

The title compound, [NH(3)(CH(2))(4)NH(3)](2+)·SiF(6) (2−), is a hybrid built from an organic butane-1,4-di­ammonium dication linked to a hexa­fluoro­silicate mineral anion. Both ions posses inversion symmetry. In the anion the Si atom is located on an inversion center, while in the cation the center of inversion is situated at the mid-point of the central —CH(2)—CH(2)— bond. The Si atom is surrounded by six F atoms, forming a slightly distorted SiF(6) (2−) octa­hedron. These octa­hedra are linked to the organic cations through N—H⋯F hydrogen bonds, forming a three-dimensional network.