Excess molar volumes of binary mixtures containing nitrotoluene at 308.15 K

Abstract

Excess molar volumes, V^E, for <em>m</em>-nitrotoluene (i) + cyclohexane (j), + <em>n</em>-hexane (j), + <em>n</em>-heptane (j) and + <em>n</em>-hexadecane (j) have been determined as a function of composition at 308.15 K. The data for an equimolar composition vary as <em>n</em>-hexane < <em>n</em>-heptane < <em>n</em>-hexadecane and suggest that while <em>m</em>-nitroluene (i) + <em>n</em>-hexane mixture is characterized by dipole-induced dipole interactions, the remaining mixtures are influenced by additional steric repulsion between the terminal CH₃ substituents of alkane and the CH₃ substituent of <em>m</em>-nitrotoluene.