Molecular rotation in liquid and solid carbon tetrachloride

Publisher Website
Google Scholar
Abstract
Spin‐spin relaxation times of chlorine‐35 have been measured in CCl4 from below the melting point (250°K) to near the gas‐liquid critical point (556°K). From density and compressibility data, the scaled particle theory, and activation energies, values of the mean work required to create a molecular vacancy are computed. Theoretical pre‐exponential factors and volumes of activation for self‐diffusion are evaluated and compared with recent data. By means of a modified Hubbard relationship and a hindered rotation model values of the rotational correlation time are evaluated and compared with experiment. Arguments are presented to indicate that the extended J‐diffusion model does not apply to liquid carbon tetrachoride.