Phase transitions, crystal growth

Parity effect – symmetry of n-alkanes molecules

A. K. Borisov, V. A. Marikhin, V. M. Egorov

Ioffe Institute, St. Petersburg, Russia

Abstract: The features of phase transitions in the homologous series of normal alkanes of different parities have been studied. The real values of thermodynamic parameters were obtained as a result of eliminating the methodological errors of differential scanning calorimetry. The presence of a parity effect in the homologous series of n-alkanes was revealed both in the behavior of the thermodynamic parameters of phase transitions and in the process of structural rearrangement of crystallographic packing during the solid-solid phase transition, caused by different symmetries of n-alkane molecules.

Keywords: n-alkanes, molecular crystals, molecular packing, symmetry, phase transitions, differential scanning calorimetry, parity effect.

Received: 07.03.2024
Revised: 07.03.2024
Accepted: 27.03.2024

DOI: 10.61011/FTT.2024.05.58081.46

Bibliographic databases:

•