Molecular Reorientation of Methanol in Mixtures with Carbon Tetrachloride

Abstract

Proton and oxygen-17 nmr relaxation ratcsof CD3l7OH as well as deuteron nmr relaxation rates of CH3OD were measured in mixtures with carbon tetrachloride at different compositions and temperatures, By varying the 17O-content different contributions to the proton relaxation rate could be separated and from the 170-Hdipolar interaction contribution the correlation time τ2OHOF the OH bond was determined. Using these correlation times the composition dependencc of the deuterium and oxygen-17 quadrupole coupling constants of methanol was derived. A strong variation of the coupling constants over the measured composition range is evident. © 1992, Verlag der Zeitschrift für Naturforschung, All rights reserved.