Wiener index and intermolecular forces

摘要

The Wiener indrex (W) is known to be well correlated with a variety of physico-chemical properties of numberous classes of roganic compounds. It was suspected for some time that the success of W has its origin in the fact that W represents a measure of intermolecular (attractive) forces, especially in the case of non-polar molecules. We now corroborate this hypothesis by showing that in the case of alkanes W is proportional to the acentric factor as well as to the parameter a in the van Der Waals equation.