Butane-1,4-diammonium hexafluorosilicate

Abstract

The title compound, [NH3(CH2)4NH3]2+-SiF62-, 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 - CH2 - CH2 - bond. The Si atom is surrounded by six F atoms, forming a slightly distorted SiF62- octahedron. These octahedra are linked to the organic cations through N - HF hydrogen bonds, forming a three-dimensional network. © Ouasri et al. 2014.