{"title":"Thermodynamic parameters characterizing complexes of alkali metal cations with dibenzo-24-crown-8 in the water—nitrobenzene extraction system","authors":"Emanuel Makrlík","doi":"10.1016/0166-6622(92)80215-N","DOIUrl":null,"url":null,"abstract":"<div><p>By using known thermodynamic parameters, the Briggs logarithms of the individual extraction constants for the ML<sup>+</sup> complex cations (M<sup>+</sup> = Na<sup>+</sup>, K<sup>+</sup>, Rb<sup>+</sup>, Cs<sup>+</sup>; L = dibenzo-24-crown-8) in the water—nitrobenzene extraction system at 25 C have been evaluated. It has been found that these constants increase in the order Na<sup>+</sup> < K<sup>+</sup> < Rb<sup>+</sup> < Cs<sup>+</sup>, i.e. in the order of increasing crystallographic radii of the alkali metal cations.</p></div>","PeriodicalId":10488,"journal":{"name":"Colloids and Surfaces","volume":"68 4","pages":"Pages 291-293"},"PeriodicalIF":0.0000,"publicationDate":"1992-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0166-6622(92)80215-N","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Colloids and Surfaces","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/016666229280215N","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
By using known thermodynamic parameters, the Briggs logarithms of the individual extraction constants for the ML+ complex cations (M+ = Na+, K+, Rb+, Cs+; L = dibenzo-24-crown-8) in the water—nitrobenzene extraction system at 25 C have been evaluated. It has been found that these constants increase in the order Na+ < K+ < Rb+ < Cs+, i.e. in the order of increasing crystallographic radii of the alkali metal cations.
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