Thermochemical Studies on 3- and 4-Nitroanilines and Their N,N-Dimethyl Derivatives

Standard enthalpies of combustion and of sublimation at 298.15 K were determined and standard enthalpies of formation in crystalline and gaseous states were derived for N,N-dimethyl-3- and N,N-dimethyl-4-nitroanilines by calorimetric measurements. Stabilization energies due to the intramolecular interaction between substituents were evaluated and discussed for these compounds and 3- and 4-nitroanilines.