Crystal structure and standard molar enthalpy of formation of ethylenediamine dilauroleate (C12H24O2)2C2N2H8(s)

Abstract

The crystal structure of ethylenediamine dilauroleate was determined by X-ray crystallography. A thermochemical cycle was designed in accordance with Hess law. The enthalpy change of the synthesis reaction of ethylenediamine dilauroleate was determined to be \( \Updelta_{{\text{r}}} H_{{\text{m}}}^{\Uptheta } \) = −(49.07 ± 0.11) kJ mol−1 by an isoperibol solution–reaction calorimeter. The standard molar enthalpy of formation of the title compound was calculated to be \( \Updelta_{\text{f}} H_{\text{m}}^{\Uptheta } \) = −(38.78 ± 0.43) kJ mol−1 by the designed thermochemical cycle, the enthalpies of dissolution and other auxiliary thermodynamic quantities.