3,5-Bis(3-butylimidazolium-1-ylmethyl)toluene bis(hexafluorophosphate)

In the title compound [systematic name: 3,3′-Dibutyl-1,1′-(5-methyl-m-phenyl­enedimethyl­ene)diimidazol-1-ium bis­(hexa­fluoridophosphate)], C(23)H(34)N(4) (2+)·2PF(6) (−), the imidazole rings are inclined at angles of 68.06 (7) and 75.05 (8)° with respect to the central benzene ring. In the crystal, mol­ecules are linked into one-dimensional columns along [010] via weak inter­molecular C—H⋯F hydrogen bonds. The crystal structure is further consolidated by weak C—H⋯π(arene) inter­actions. One of the n-butyl groups is disordered over two sites with refined occupancies of 0.694 (5) and 0.306 (5). In addition, four of the F atoms of one of the PF(6) (−) cations are disordered over two sites with occupancies of 0.64 (3) and 0.36 (3).