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Zusammenfassung
Precise complex permittivity spectra of the amides formamide, N-methylformamide (NMF), N,N-dimethylformamide, and N,N-dimethylacetamide and of the dipolar aprotic solvents acetonitrile, propylene carbonate, and DMSO were detd. at 0.95-89 GHz. The dielec. relaxation of all liqs. is nonexponential, ranging from a small sym. relaxation time distribution for acetonitrile to 3 discrete dispersion steps for NMF.
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