Complex formation of Ag+ with polyether 18-crown-6 |
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Authors: | Usacheva T. Ledenkov S. Sharnin V. |
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Affiliation: | (1) Ivanovo State University of Chemistry and Technology, F. Engels Av. 7, 153460 Ivanovo, Russia |
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Abstract: | The complex formation of Ag+ with polyether 18-crown-6 (18C6) and their solvation have been studied using calorimetric and potentiometric methods in H2O-EtOH solvents in wide range of ethanol concentration. The standard enthalpies of dissolution AgNO3, AgClO4 and 18C6 in aqueous-ethanol solvents are obtained. The stability of a complex [Ag18C6]+ grows with increasing the EtOH content a solvent. Using the method based on the thermodynamic characteristics of solvation of metal-ion, ligand and complex-ion the interpretation of the results has been given. This revised version was published online in August 2006 with corrections to the Cover Date. |
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Keywords: | complex formation complex stability ethanol binary solvents 18-crown-6 silver(I) ion transfer enthalpy change |
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