title: 9,10-Bis{2-[1-(2-pyridylmeth-yl)imidazolium-3-yl]eth-oxy}anthracene bis(hexa-fluoridophosphate).
abstract: The cation of the title compound, C(36)H(34)N(6)O(2) (2+)·2PF(6) (-), 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 inter-actions between the pyridine ring and the central ring of anthracene, with a ring centroid-centroid distance of 3.684 (3) Å. The PF(6) (-) anion is disordered over three different positions with occupancies of 0.284 (6), 0.354 (8) and 0.362 (9).
authors.affiliation: School of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, People's Republic of China.
authors.forename: Li-Hui
authors.initials: LH
authors.lastname: Guo
authors.forename: Da-Bin
authors.initials: DB
authors.lastname: Qin
authors.forename: Shao-Jin
authors.initials: SJ
authors.lastname: Gu
authors.forename: Gui-Yu
authors.initials: GY
authors.lastname: Wang
authors.forename: Jie-Wei
authors.initials: JW
authors.lastname: Luo