A relationship between the associating power of optical isomers, and the formation of racemic compounds

Abstract

It has been shown that substances which do not associate, or do so only to a slight extent, yield melting point curves for their optical isomers which either definitely show the absence of a racemic compound, or show that it is unlikely to be present to any large extent.

Secondly, substances which are definitely known to associate show the existence of a racemic compound from the investigation of their melting point curves, and the theoretical curves, which have been drawn, agree well with the assumption that the dextro isomer is associated with itself in the pure isomer to the same extent as it is associated with the laevo isomer in the racemic compound.