THE ION DIPOLE INTERACTION MECHANISM OF MACROCYCLIC ETHERS WITH C-13 DIPOLE DIPOLE RELAXATION-TIME MEASUREMENTS .9. THE STABILITIES OF 18-CROWN-6 COMPLEXES WITH NA+ AND K+ IN D2O AND METHANOL-D

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dc.contributor.authorERK, C
dc.date.accessioned2024-04-24T16:10:41Z
dc.date.available2024-04-24T16:10:41Z
dc.date.issued1991
dc.departmentDicle Üniversitesien_US
dc.description.abstractThe stabilities of various stoichiometries of the 18-crown-6 ether complexes with Na+ and K+ in methanol-d and D2O were estimated by means of an NMR method using C-13 T1 relaxation time measurements. The experimental coordination conditions were established by maintaining an identical ion/ligand concentration. The evidence was evaluated using the expression of dependence of the mole fraction of the bound ligand, P(AE), to the experimental dipole-dipole relaxation time, T1obs: P(AE) = (1/T1obs - 1/T(E))/(1/T(AE) - 1/T(E)). The equilibrium constants K(e) for complex formation were obtained through the expression and regression of 1/K(e)[E0]n+m-1 = (1 - nP')n(1 - mP')m/P' where P' = P(AE)/(1 + P(AE)(m - 1)). The existence of various n:m ratios of complexes in solution has also been verified with the simulation of the T(AE) behaviour of each stoichiometry.en_US
dc.identifier.doi10.1016/0040-6031(91)80401-4
dc.identifier.endpage324en_US
dc.identifier.issn0040-6031
dc.identifier.scopus2-s2.0-0000636092
dc.identifier.scopusqualityQ1
dc.identifier.startpage317en_US
dc.identifier.urihttps://doi.org/10.1016/0040-6031(91)80401-4
dc.identifier.urihttps://hdl.handle.net/11468/15034
dc.identifier.volume180en_US
dc.identifier.wosWOS:A1991FJ64600033
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoenen_US
dc.publisherElsevier Science Bven_US
dc.relation.ispartofThermochimica Acta
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject[No Keyword]en_US
dc.titleTHE ION DIPOLE INTERACTION MECHANISM OF MACROCYCLIC ETHERS WITH C-13 DIPOLE DIPOLE RELAXATION-TIME MEASUREMENTS .9. THE STABILITIES OF 18-CROWN-6 COMPLEXES WITH NA+ AND K+ IN D2O AND METHANOL-Den_US
dc.titleTHE ION DIPOLE INTERACTION MECHANISM OF MACROCYCLIC ETHERS WITH C-13 DIPOLE DIPOLE RELAXATION-TIME MEASUREMENTS .9. THE STABILITIES OF 18-CROWN-6 COMPLEXES WITH NA+ AND K+ IN D2O AND METHANOL-D
dc.typeArticleen_US

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