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| VOLUME 23 (1976) | ISSUE 1 |
PAGE 14
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Thermodynamic similarity of the correlation times of rotational motion of molecules in a liquid
Revokatov O.P., Parfenov S.V.
It is shown that the dependences of the relative values of the angular momentum correlation time tjr and of the reorientation correlation time τθ R on the relative temperature T/Tc, measured by the method of NMR relaxation method along the liquid-vapor coexistence line, coincide in the case of molecules that are rigid rotators with symmetry Ofc, Td, and C3„. For the liquid phase, an exponential dependence of reR on l/T is observed, with an "activation energy" ç7Å = (1.3±0.1)çÓÇ (çÓÇ is the critical temperature).
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![](/ps/1795/article_27410_800_head.png "It is shown that the dependences of the relative values of the angular momentum correlation time <b><i>t<sub>jr</sub> </i></b>and of the reorientation correlation time <b><i>τ<sub>θ</sub> <sub>R</sub> </i></b>on the relative temperature <b><i>T/T<sub>c</sub>, </i></b>measured by the method of NMR relaxation method along the liquid-vapor coexistence line, coincide in the case of molecules that are rigid rotators with symmetry O<sub>fc</sub>, <b><i>T<sub>d</sub>, </i></b>and C<sub>3</sub>„. For the liquid phase, an exponential dependence of <b><i>r<sub>eR</sub> </i></b>on <b><i>l/T </i></b>is observed, with an "activation energy" ç7<sub>Å</sub> = (1.3±0.1)ç<sub>ÓÇ</sub> (ç<sub>ÓÇ</sub> is the critical temperature).")