2,4-Bis[(3-butyl-imidazol-3-ium-1-yl)meth-yl]-1,3,5-trimethyl-benzene bis-(hexa-fluoro-phosphate).

In the title molecular salt, C(25)H(38)N(4) (2+)·2PF(6) (-), one of the butyl groups and four F atoms in the basal plane of one of the PF(6) (-) octa-hedra are disordered over two sets of sites, with occupancy ratios of 0.704 (5):0.296 (5) and 0.71 (3):0.29 (3), respectively. The central benzene ring makes dihedral angles of 85.17 (12) and 81.97 (12)° with the terminal imidazole rings. In the crystal, cations and anions are linked together via inter-molecular C-H⋯F hydrogen bonds forming a three-dimensional network.