3,3′-[1,2-Phenylenebis(methylene)]bis(1-ethyl-1H-benzimidazol-1-ium) bis(hexaflourophosphate)

In the title compound, C26H28N42+center dot 2PF(6)(-), the complete cation is generated by a crystallographic twofold axis. The benzimidazole ring is almost planar (r.m.s. deviation = 0.0207 angstrom) and makes dihedral angles of 50.12 (2)degrees with its symmetry-related component and 65.81 (2)degrees with the central benzene ring. In the crystal, molecules are linked into a three-dimensional network by C-H center dot center dot center dot F interactions. A pi-pi interaction with a centroid-centroid distance of 3.530 (1) angstrom is observed. Four F atoms of the hexafluorophosphate anion are disordered over two sets of sites in a 0.889 (6):0.111 (6) ratio.