Solvent effect on the complex formation of a crown ether derivative with sodium and potassium ions. Thermodynamic background of selectivity

Yin Li, P. Huszthy, Ildikó Móczár, Balázs Szemenyei, S. Kunsági-Máté

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The complexation properties of dimethyl-pyridino-18-crown-6 ether (M 2P18C6) with Na+ and K+ in different primary alcohols including methanol (MeOH), ethanol (EtOH) and n-propanol (n-PrOH) were investigated by UV-vis spectroscopy. Stability constants and thermodynamic parameters have been determined applying the van't Hoff theory. In the cases of both Na+ and K+ the stability constants increase with decreasing permittivity of the solvent used. M2P18C6 always exhibits better affinity to K+ in each alcoholic solution compared to Na +. Thermodynamic studies suggest that in both cases there is a correlation between the permittivity of the solvent and the enthalpy and entropy change of complex formation.

Original languageEnglish
Pages (from-to)94-97
Number of pages4
JournalChemical Physics Letters
Volume556
DOIs
Publication statusPublished - Jan 29 2013

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Crown Ethers
ethers
potassium
Potassium
Permittivity
selectivity
Sodium
sodium
Thermodynamics
Ions
permittivity
Derivatives
1-Propanol
thermodynamics
Ultraviolet spectroscopy
Complexation
trucks
Ether
Methanol
affinity

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

Cite this

Solvent effect on the complex formation of a crown ether derivative with sodium and potassium ions. Thermodynamic background of selectivity. / Li, Yin; Huszthy, P.; Móczár, Ildikó; Szemenyei, Balázs; Kunsági-Máté, S.

In: Chemical Physics Letters, Vol. 556, 29.01.2013, p. 94-97.

Research output: Contribution to journalArticle

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