Thermodynamics and topological investigations of molecular interactions in methylene bromide + nitrobenzene mixture

Abstract

Molar excess volumes, <i>V</i>^E, and molar excess enthalpies, <i>H</i>^E for methylene bromide(i) + nitrobenzene(j) mixture have been measured as a function of composition at 308.15 K. Graph-theoretical analysis of <i>V</i>^E data suggests that while nitrobenzene exists as equilibrium mixture of monomer and dimer in this mixture, the mixture as such contains a 1:1 molecular complex. IR and NMR studies lend further credance to this viewpoint.