Study of solvent effects on the stability constant and ionic mobility of the dibenzo-18-crown-6 complex with potassium ion by affinity capillary electrophoresis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F16%3A00469178" target="_blank" >RIV/61388963:_____/16:00469178 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/16:10332616 RIV/00216208:11510/16:10332616

Result on the web

<a href="http://dx.doi.org/10.1002/jssc.201600830" target="_blank" >http://dx.doi.org/10.1002/jssc.201600830</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/jssc.201600830" target="_blank" >10.1002/jssc.201600830</a>

Result language

angličtina

Original language name

Study of solvent effects on the stability constant and ionic mobility of the dibenzo-18-crown-6 complex with potassium ion by affinity capillary electrophoresis

Original language description

The effect of solvent on the strength of noncovalent interactions and ionic mobility of the dibenzo-18-crown-6 complex with K+ in water/organic solvents was investigated by using affinity capillary electrophoresis. The proportion of organic solvent (methanol, ethanol, propan-2-ol, and acetonitrile) in the mixtures ranged from 0 to 100 vol.%. The stability constant, K-KL, and actual ionic mobility of the dibenzo-18-crown-6-K+ complex were determined by the nonlinear regression analysis of the dependence of the effective electrophoretic mobility of dibenzo-18-crown-6 on the concentration of K+ (added as KCl) in the background electrolyte (25 mM lithium acetate, pH 5.5, in the above mixed hydro-organic solvents). Competitive interaction of the dibenzo-18-crown-6 with Li+ was observed and quantified in mixtures containing more than 60 vol.% of the organic solvent. However, the stability constant of the dibenzo-18-crown-6-Li+ complex was in all cases lower than 0.5 % of K-KL. The log KKL increased approximately linearly in the range 1.62-4.98 with the increasing molar fraction of organic solvent in the above mixed solvents and with similar slopes for all four organic solvents used in this study. The ionic mobilities of the dibenzo-18-crown-6-K+ complex were in the range (6.1-43.4) x 10-9 m(2) V-1 s(-1).

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CB - Analytical chemistry, separation

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Separation Science

ISSN

1615-9306

e-ISSN

—

Volume of the periodical

39

Issue of the periodical within the volume

22

Country of publishing house

DE - GERMANY

Number of pages

10

Pages from-to

4429-4438

UT code for WoS article

000389047500020

EID of the result in the Scopus database

2-s2.0-84991102639