INCLUSION OF FERROCENECARBOXYLIC ACID AND ITS CARBOXYLATE ANION BY β-CYCLODEXTRIN AS OBSERVED BY INDUCED CIRCULAR DICHROISM

Abstract Induced circular dichroism (i.c.d.) has revealed that the arrangements of ferrocenecarboxylic acid (FCA) and its carboxylate anion (FCA−) in β-cyclodextrin (β-CDx) are significantly different from each other. Based on the previously accummulated knowledge on i.c.d., the orientation of FCA and FCA− in β-CDx is conjectured to be different by almost 90 degree in the X-Z plane, provided that the positions of these species in β-CDx cavity are the same.