Dielectric Relaxation of NaClO_4 Solutions in Formamide, N-Methylformamide, and N,N-Dimethylformamide

J. Barthel; K. Bachhuber; R. Buchner

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Dielectric Relaxation of NaClO_4 Solutions in Formamide, N-Methylformamide, and N,N-Dimethylformamide

机译：NaClO_4溶液在甲酰胺，N-甲基甲酰胺和N，N-二甲基甲酰胺中的介电弛豫

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摘要

Complex permittivity spectra in the frequency range 0.95 ≤ v/[GHz] ≤ 89 for N,N-dimethylform-amide (DMF), N-methylformamide (NMF), formamide (FA) and their solutions of NaClO_4 are investigated to study the change of liquid structure and dynamics arising from the availability of one hydrogen-bond acceptor site together with no (DMF), one (NMF), or two (FA) donor sites on the same molecule. Three solvent relaxation processes are observed for NMF and two for FA and DMF. The relaxation parameters are used to determine solvation numbers. They show that ion-solvent interactions lead to a reduction of the average length of the H-bonded NMF chains but have only moderate influence on the FA structure. An additional solute relaxation process in DMF solutions is due to the diffusion-controlled formation and decomposition of solvent-shared ion pairs.

机译：研究了N，N-二甲基甲酰胺（DMF），N-甲基甲酰胺（NMF），甲酰胺（FA）及其NaClO_4溶液在0.95≤v / [GHz]≤89频率范围内的复介电常数谱，以研究其变化液体结构和动力学的变化，是由于同一分子上没有一个（DMF），一个（NMF）或两个（FA）供体位点而获得一个氢键受体位点。对于NMF，观察到三种溶剂松弛过程，对于FA和DMF，观察到两种溶剂松弛过程。弛豫参数用于确定溶剂化数。他们表明，离子-溶剂相互作用导致氢键NMF链平均长度的减少，但对FA结构的影响较小。 DMF溶液中额外的溶质松弛过程是由于溶剂共享离子对的扩散控制形成和分解。

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《Zeitschrift fur Naturforschung. A, A journal of physical sciences》 |1995年第1期|p.65-74|共10页
作者
J. Barthel; K. Bachhuber; R. Buchner;
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作者单位

Institut fuer Physikalische und Theoretische Chemie, Universitaet Regensburg, D-93040 Regensburg;

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正文语种 eng
中图分类物理学;
关键词
dielectric relaxation; formamides; solvation; solvent dynamics; ion association;

机译：介电弛豫;甲酰胺;溶剂化;溶剂动力学;离子缔合;

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1. The dynamics of liquid formamide, N-methylformamide, N,N-dimethylformamide, and N,N-dimethylacetamide. A dielectric relaxation study [J] . Barthel J., Buchner R., Wurm B. Journal of Molecular Liquids . 2002,第Speca期

机译：液体甲酰胺，N-甲基甲酰胺，N，N-二甲基甲酰胺和N，N-二甲基乙酰胺的动力学。介电弛豫研究
2. Static Dielectric Constants and Kirkwood Correlation Factor of the Binary Mixtures of N-Methylformamide with Formamide, N,N-Dimethylformamide and N,N-Dimethylacetamide [J] . Sengwa RJ, Khatri V, Sankhla S Journal of Solution Chemistry . 2009,第6期

机译：N-甲基甲酰胺与甲酰胺，N，N-二甲基甲酰胺和N，N-二甲基乙酰胺的二元混合物的静态介电常数和柯克伍德相关因子
3. Solution behavior of {(formamide/N-methylformamide/ N,N-dimethylformamide) + CsCl + water} ternary systems at multiple temperatures [J] . Dandan Zhao, Shuni Li, Quanguo Zhai, The Journal of Chemical Thermodynamics . 2014,第Null期

机译：{（甲酰胺/ N-甲基甲酰胺/ N，N-二甲基甲酰胺）+ CsCl +水}三元体系在多个温度下的溶液行为
4. Investigation of intermolecular interactions between formamide-dimethyl amino ethanol binary mixtures through dielectric relaxation and FTIR study [C] . Vrushabh Manoj Khandelwal, Prabhakar Bhawagtrao Undre, Faiza Awad Saif, International Conference on Physics of Materials and Nanotechnology . 2020

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7. Temperature-dependence of the ultrafast intermolecular dynamics of Amides: Formamide, N-methylformamide, N,N-dimethylformamide, N- methylacetamide, and N-methylpropionamide from 290-370 K [O] . Castner, E.W. 1996

机译：amides的超快分子间动力学的温度依赖性：甲酰胺，N-甲基甲酰胺，N，N-二甲基甲酰胺，N-甲基乙酰胺和N-甲基丙酰胺290-370 K
8. Temperature-dependence of the ultrafast intermolecular dynamics of Amides: Formamide, N-methylformamide, N,N-dimethylformamide, N- methylacetamide, and N-methylpropionamide from 290-370 K [R] . 1996

机译：amides的超快分子间动力学的温度依赖性：甲酰胺，N-甲基甲酰胺，N，N-二甲基甲酰胺，N-甲基乙酰胺和N-甲基丙酰胺290-370 K

Dielectric Relaxation of NaClO_4 Solutions in Formamide, N-Methylformamide, and N,N-Dimethylformamide

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