A Dielectric Relaxation Study of Lithium Salt Solutions in Dimethylsulfoxide
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S.A. Markarian
The dielectric spectra of LiCl, LiClO4 and LiNO3 in dimethylsulfoxide (DMSO) have been measured from some MHz to 72 GHz at 20°C. For the lower salt concentration range (< 0.5 mol/l) the relaxational contribution to the spectrum (apart from the conductivity contribution) is described by two Debye terms, whereas for higher concentrations (up to 1 mol/l) one Debye plus one (higher frequency) Cole-Davidson (CD) term is used. The lower frequency relaxation is likely to be due to solvent shared ionic species. The higher frequency relaxation is ascribed to practically unaffected solvent.
Die dielektrischen Spektren von LiCl, LiClO4 und LiNO3 in Dimethylsulfoxid (DMSO) wurden zwischen einigen MHz und 72 GHz bei 20°C gemessen. Bei geringen Salzkonzentrationen (< 0.5 mol/l) genügen (neben dem Leitfähigkeitsbeitrag) zwei Debye-Terme zur Beschreibung des Spektrums, bei höheren Salzkonzentrationen werden ein Debye- und ein (höherfrequenter) Cole-Davidson-Term benutzt. Der niederfrequente Relaxationsbeitrag dürfte von ionischen Spezies mit Solvensbeteiligung herrühren, der höherfrequente vom praktisch unbeeinflußten Lösungsmittel.
Artikel in diesem Heft
- A Dielectric Relaxation Study of Lithium Salt Solutions in Dimethylsulfoxide
- Quantitative Determination of Photokinetic Parameters for Reversible Photoisomerizations in Light Scattering Adsorbent-Adsorbates
- Studies on Hydrogen Bond Formation of Papaverine and Pentazocine
- Reaction between 8-Hydroxyquinoline and Salicylic Acid in Solid State and Solution
- Particle Entropies and Entropy Quanta. I. The Ideal Gas
- Dynamical and Quantumchemical Characteristics of Electronic Charge Density Transfer Processes
- Raman Spectroscopic Studies of Scandium(III) Hydration in Aqueous Solution - about the First Hydration Sphere of Sc(III) in Solution
- T,p-Dependence of Self-Diffusion in the Lower N-methylsubstituted Amides
- Time Necessary for Reaching Chemical Equilibrium: First Passage Time Approach
Artikel in diesem Heft
- A Dielectric Relaxation Study of Lithium Salt Solutions in Dimethylsulfoxide
- Quantitative Determination of Photokinetic Parameters for Reversible Photoisomerizations in Light Scattering Adsorbent-Adsorbates
- Studies on Hydrogen Bond Formation of Papaverine and Pentazocine
- Reaction between 8-Hydroxyquinoline and Salicylic Acid in Solid State and Solution
- Particle Entropies and Entropy Quanta. I. The Ideal Gas
- Dynamical and Quantumchemical Characteristics of Electronic Charge Density Transfer Processes
- Raman Spectroscopic Studies of Scandium(III) Hydration in Aqueous Solution - about the First Hydration Sphere of Sc(III) in Solution
- T,p-Dependence of Self-Diffusion in the Lower N-methylsubstituted Amides
- Time Necessary for Reaching Chemical Equilibrium: First Passage Time Approach
