X-Ray crystallographic study of fluorine atom effect on guest orientation inside the α-cyclodextrin cavity
Abstract
X-Ray crystallographic studies of α-cyclodextrin (α-CD)–2- and –4-fluorophenol complexes indicate that the fluorine atom determines the guest orientations inside the α-CD cavity in both complexes, and accordingly that the hydroxy groups of 4-FC6H4OH and 2-FC6H4OH are located inside and outside the cavity, respectively.