9,10-Bis{2-[1-(2-pyridylmethyl)imidazolium-3-yl]ethoxy}anthracene bis(hexafluoridophosphate)

Abstract

The cation of the title compound, C36H34N6O22+·2PF6−, lies across a crystallographic inversion centre. The imidazole and pyridine rings form dihedral angles of 82.28 (5)° and 11.87 (7)°, respectively, with the anthracene ring system. The crystal packing is stabilized by π–π interactions between the pyridine ring and the central ring of anthracene, with a ring centroid–centroid distance of 3.684 (3) Å. The PF6− anion is disordered over three different positions with occupancies of 0.284 (6), 0.354 (8) and 0.362 (9).