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New crownophanes containing fragments of 1,5-dioxynaphthalene and 2,7-dioxyfluorene or 2,7-dioxyfluorene were synthesized by reduction of the corresponding fluorenonocrownophanes. H2–Pd/C or Wolff-Kishner methods were utilized. Molecular structure of bis(fluoreno)crownophane with tetraethyleneglycol linkers was confirmed by singlecrystal X-ray diffraction. The formation of pseudorotaxane-type host-guest complexes of the obtained crownophanes with paraquat dication was detected by FABMS, 1H NMR and UV-Vis spectroscopy.

New Fluorenocrownophanes with Naphthalene Fragments: Synthesis, Structure, Properties and Interaction with Paraquat