Measurements of static dielectric constants (epsilon) have been made for binary liquid mixtures of N,N-dimethylformamide (DMF)/2-methoxyethanol (ME) at 19 temperatures ranging from -10 to + 80-degrees-C. Some empirical equations of the type epsilon = epsilon(T), epsilon = E(X1), and epsilon = epsilon(T,X1) have been applied to check their validity. The epsilon(E) values, which refer to the deviation of the dielectric constants of the binaries from the values arising from mole fraction mixture law, have been calculated. Deviations from ideal behaviour have been found to be positive at all temperatures. The positive epsilon(E) values are attributed to a specific interaction between unlike molecules, which leads to the formation of complexes between DMF and ME in the liquid state. These nDMF . mME complex moieties were found to have the stoichiometric ratios 2:1, 1:1, and 1:2 in the temperature range of -10 to + 80-degrees-C.

Static dielectric constant of N,N-dimethylformamide / 2-methoxyethanol solvent system at various temperatures / F., Corradini; L., Marcheselli; Tassi, Lorenzo; G., Tosi. - In: CANADIAN JOURNAL OF CHEMISTRY. - ISSN 0008-4042. - STAMPA. - 70:(1992), pp. 2895-2899.

Static dielectric constant of N,N-dimethylformamide / 2-methoxyethanol solvent system at various temperatures

TASSI, Lorenzo;
1992-01-01

Abstract

Measurements of static dielectric constants (epsilon) have been made for binary liquid mixtures of N,N-dimethylformamide (DMF)/2-methoxyethanol (ME) at 19 temperatures ranging from -10 to + 80-degrees-C. Some empirical equations of the type epsilon = epsilon(T), epsilon = E(X1), and epsilon = epsilon(T,X1) have been applied to check their validity. The epsilon(E) values, which refer to the deviation of the dielectric constants of the binaries from the values arising from mole fraction mixture law, have been calculated. Deviations from ideal behaviour have been found to be positive at all temperatures. The positive epsilon(E) values are attributed to a specific interaction between unlike molecules, which leads to the formation of complexes between DMF and ME in the liquid state. These nDMF . mME complex moieties were found to have the stoichiometric ratios 2:1, 1:1, and 1:2 in the temperature range of -10 to + 80-degrees-C.
70
2895
2899
Static dielectric constant of N,N-dimethylformamide / 2-methoxyethanol solvent system at various temperatures / F., Corradini; L., Marcheselli; Tassi, Lorenzo; G., Tosi. - In: CANADIAN JOURNAL OF CHEMISTRY. - ISSN 0008-4042. - STAMPA. - 70:(1992), pp. 2895-2899.
F., Corradini; L., Marcheselli; Tassi, Lorenzo; G., Tosi
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/303717
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 40
social impact