Abstract
Chemical shifts of 1H and 17O nuclei in DMF, acetic acid, and ethanol dissolved in CH3COOH-DMF and C2H5OH-DMF mixtures were evaluated in all the range of the solvents compositions at 298.15 K. Analysis of concentration dependences of the shift values obtained from the point of view of complex formation and association was carried out. Differences observed in the behavior of acid and alcohol are connected with higher ability of the acid to associalion as compared to ethanol. On the basis of the obtained values of 17O chemical shifts the values of the extra chemical shifts were calculated and described by means of the Redlich-Kister equation.
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