X‐ray diffraction study of some normal alkyl thiolesters of long chain acids

Summary X‐ray diffraction‐powder data are reported for 39n‐alkyl thiolesters comprising four different series, namely, lauric, myristic, palmitic, and stearic acids. All individual compounds can be identified and distinguished by the X‐ray diffraction data. Compounds containing the same total number of carbon atoms in the molecule have the same long and side spacings but differ in the relative intensities of the various orders of the long spacings. The esters crystallize in tilted monomolecular layers. The long spacing is a function of the total carbon content of the molecule and forms two series, one for the odd members and one for the even members. A change in the structure‐type definitely occurs in the odd series on decreasing alkyl chain‐length below 9 carbons.