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Dielectric spectra of some common solvents in the microwave region. Dipolar aprotic solvents and amides

✍ Scribed by J. Barthel; K. Bachhuber; R. Buchner; J.B. Gill; M. Kleebauer

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 488 KB
Volume: 167
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(90)85071-j

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✦ Synopsis

Precise complex permittivity spectra of the amides formamide, N-methylformamide, N,N-dimethylformamide, and N,N-dimethylacetamide and of the dipolar aprotic solvents acetonitrile, propylene carbonate, and dimethylsulfoxide were determined in the frequency range 0.95-89 GHz. The dielectric relaxation of all liquids is non-exponential, ranging from a small symmetrical relaxation time distribution for acctonitrile to three discrete dispersion steps for NMF.

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Dielectric spectra of some common solven

Dielectric spectra of some common solvents in the microwave region. Water and lower alcohols

✍ J. Barthel; K. Bachhuber; R. Buchner; H. Hetzenauer 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 496 KB

Precise complex permittivity spectra of the hydrogen-bonding liquids water, methanol, ethanol, I-propanol, and 2-propanol have been determined in the frequency range 0.95-89 GHz. It is shown that the dielectric relaxation behaviour of water is governed by two exponentials, whereas three discrete dis