1-Benzyl-3-[3-(naphthalen-2-yl­oxy)prop­yl]imidazolium hexa­fluoro­phosphate

In the title salt, C(23)H(23)N(2)O(+)·PF(6) (−), the PF(6) (−) anion is highly disordered (occupancy ratios of 0.35:0.35:0.3, 0.7:0.15:0.15, 0.7:0.3 and 0.35:0.35:0.15:0.15) with the four F atoms in the equatorial plane rotating about the axial F—P—F bond. The mean plane of the imidazole ring makes dihedral angles of 82.44 (17) and 14.39 (16)°, respectively, with the mean planes of the benzene ring and the naphthalene ring system. The crystal structure is stabilized by C—H⋯F hydrogen bonds. In addition, π–π [centroid–centroid distances = 3.7271 (19)–3.8895 (17) Å] and C—H⋯π inter­actions are observed.