Isobaric heat capacity, isothermal compressibility and fluctuational properties of 1-bromoalkanes

TL;DR

This study provides experimental data on thermodynamic properties of various 1-bromoalkanes, analyzing how bromine affects volume fluctuations compared to pure n-alkanes, within a broad temperature range.

Contribution

It offers new experimental measurements of heat capacity, density, and sound speed for 1-bromoalkanes, and analyzes the impact of bromine on fluctuational properties.

Findings

Bromine atom influences volume fluctuations in 1-bromoalkanes.

Experimental data extend understanding of thermodynamic properties of halogenated alkanes.

Comparison with n-alkanes highlights bromine's effect on molecular fluctuations.

Abstract

We present results of the experimental measurements of the isobaric heat capacity for 1-bromohexane, 1-bromoheptane, 1-bromooctane, 1-bromononane, 1-bromodecane, 1-bromoundecane, 1-bromododecane and 1-bromo-tetradecane at normal pressure and the speed of sound and the density for 1-bromotetradecane within the temperature range 298.15--423.15~K. These data on the isobaric heat capacity and the literature-based reference data for the density and the speed of sound were used to calculate the isothermal compressibility and the inverse reduced fluctuations. Based on the comparison of the results for pure n-alkanes and $\alpha,\omega$-dibromoalkanes, we discuss the influence of bromine atom on the volume fluctuations.