Togrul, MDemirel, NKaynak, FBÖzbey, SHosgören, H2024-04-242024-04-2420041388-31271573-1111https://hdl.handle.net/11468/22323The X-ray crystal structure of IX, perchlorate salt of R-(-)-2-ethyl-N-benzyl-4,7,19,13-tetraoxa-8,9-benzo-1-azacyclopentadec-8-ene has been determined. In the molecule, the protonated nitrogen atom participates in two N-(HO)-O-... hydrogen bonds. The unusually high proton affinity of aza crown ether leads to the formation of diastreomer instead of complex formation with chiral R-(+)-1-phenyl ethyl ammonium perchlorate and S-(-)-1-phenyl ethyl ammonium perchlorate. The complex ability of host ethers was evaluated in terms of structural modification.eninfo:eu-repo/semantics/closedAccessChiral Crown EtherCrystal StructureMolecular RecognitionArticle503-4165171WOS:000226207500004Q3