Non-Covalent Interactions in Triglycerides: Vaporisation Thermodynamics for Quantification of Dispersion Forces

Qualitatively, the non-covalent interactions are well-known and help to explain many phenomena in chemistry biochemistry. Quantitatively, determination of strength this force is a challenging task. The vaporization enthalpy reliable measure not only for intermolecular liquid phase, but also as gas phase specific group compounds, e.g., triglycerides. vaporisation thermodynamics four triglycerides were studied by using transpiration method, quartz crystal microbalance, thermogravimetric analysis. Vapour pressure–temperature dependences used derive enthalpies these very low volatile liquids. Vaporisation available literature collected uniformly adjusted reference temperature 298.15 K validated structure–property relationships (chain-length dependence, correlation with retention indices, normal boiling points). consistent sets evaluated linear branched develop “centerpiece” based group-additivity method predicting It has turned out that family do obey rules. reason evaporated exhibit intensive attractive dispersion strongly dependent on alkyl-chain length. For first time intensity was quantified aliphatic chain length from 3 18 carbon atoms. influence branching unsaturation alkyl chains discussed.