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organic compounds
The title π-electron-rich naphthalene-containing polyether {alternative name: 2,2′-[1,5-naphthylenebis(oxyethoxy)]diethanol} forms a 1:1 crystalline complex with the π-electron acceptor 4,4′-dimethyl-4,4′-bipyridinium bis(hexafluorophosphate), C12H14N22+.2PF6−.C18H24O6. The molecular packing exhibits extensive intermolecular hydrogen bonding and infinite π-stacking of the complex along the direction of the b axis.