Conformations of esters of saturated normal acids
Abstract
Changes in the i.r. spectra of saturated esters between –110° and +40° suggest that in methyl propionate and methyl n-butyrate there is an equilibrium between the eclipsed and the gauche forms of the alkyl group with enthalpy (ΔH) differences between these forms of 78 ± 50 cal.mole.–1 and 182 ± 60 cal.mole–1 respectively.