Calix[4]arene-(2,3-naphthylene-crown-6,crown-6) as an extraordinarily efficient macrocyclic receptor for the univalent thallium cation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F15%3A43900037" target="_blank" >RIV/60461373:22340/15:43900037 - isvavai.cz</a>
Alternative codes found
RIV/60460709:41330/15:#0000107 RIV/60461373:22810/15:43900037
Result on the web
<a href="http://www.tandfonline.com/doi/pdf/10.1080/00268976.2015.1016464" target="_blank" >http://www.tandfonline.com/doi/pdf/10.1080/00268976.2015.1016464</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1080/00268976.2015.1016464" target="_blank" >10.1080/00268976.2015.1016464</a>

Result language
angličtina
Original language name
Calix[4]arene-(2,3-naphthylene-crown-6,crown-6) as an extraordinarily efficient macrocyclic receptor for the univalent thallium cation
Original language description
On the basis of extraction experiments and. gamma-activity measurements, the extraction constant corresponding to the equilibrium Tl+ ( aq) + 1 . Cs+ ( nb)reversible arrow 1 .Tl+ ( nb) + Cs+ ( aq) taking place in the two-phase water-nitrobenzene system (1 = calix[ 4] arene-( 2,3- naphthylene-crown-6, crown-6); aq = aqueous phase, nb = nitrobenzene phase) was determined as log Kex( Tl+,1 . Cs+) = 0.3 +/- 0.1. Further, the extremely high stability constant of the 1 . Tl+ complex in nitrobenzene saturatedwith water was calculated for a temperature of 25. degrees C: log beta(nb)( 1 . Tl+) = 10.0 +/- 0.2. Finally, applying quantum mechanical calculations, the most probable structure of the cationic complex species 1 . Tl+ was derived. In the resulting complex, the 'central' cation Tl+ is bound by eight strong bonds to six oxygen atoms of the crown-6 moiety and to two carbons from the respective two benzene rings of the parent ligand 1 via cation-pi interaction. The interaction energy, E(
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CB - Analytical chemistry, separation
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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