Structural characterization of a sodium perchlorate−acridino-18-crown-6 ether complex

This paper describes the X-ray crystal structure of a complex of acridino-18-crown-6 ether (S,S)-2 and sodium perchlorate. The structure shows a homodimer in the crystal and suggests the potential for π–π bonded interactions between the monomers. The average distance of the two tricyclic units (3.49 ± 0.1 Å) may indicate a considerably strong π–π interaction. Fluorescence titration was performed in order to determine the stoichiometry and...