Ponderal Substituent Effect due to Alkyl Substitution in 1-Alkanes: Quantitative Correlation with Physical Constants

Abstract

Ponderal substituent effect due to changing alkyl substitution is
demonstrated on the physical properties-vapour pressure, viscosity,
diamagnetic susceptibility and polarizability-of  1-alkanes. The ponderal
parameter log (1/μ) has been shown to give linear correlation with a function
of the corresponding physical constant, in each case. The correlation
is justified as consequence of substituent mass effect on the vibrational
component of the covalent molecular interactions between the alkane
molecules, created by dispersion forces.