Neutral complexing agents with a cyclitol core. Effect of the relative orientation of the sidearms and end groups on the cation binding ability of myo-inositol based podands

Abstract

myo-Inositol derived podands were synthesized and the extent of their binding with picrates of alkali metals, ammonia and silver was estimated. These podands bind very well with lithium and silver picrates but show moderate to poor binding toward sodium, potassium, caesium and ammonium picrates. The ion selectivity and the strength of binding are dependent on the relative orientation of the sidearms (1,3-diaxial, 1,2-diequatorial and 1,2-axial–equatorial) as well as on the nature of the end group present in the podands.