Abstract
In order to clarify the molecular recognition appeared as total of the interaction between molecules in solution, it is very important to understand the interaction between molecules based on the slightly different in the molecular structure. Excess enthalpies of systems of enantiomers, o-, m-, p-isomers, isotopes have been measured by precise microcalorimetry. The results were contributed to verify the solution theory and summarize between the structures of the molecules constituted solution and the properties of solution. The major interactions of these systems were classified from cohesive energy density or dipole-dipole interaction parameters. Moreover, the effect of non-polar interactions and polar interactions were clarified from the enthalpies of mixing with amphipathic FAMSO and DMSO and compounds which designed systematically polar functional groups and non-polar ones such as aliphatic compounds, and the results about the molecular structure of the aliphatic compound in solution were introduced.
https://ror.org/05kt9ap64 
