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

Kód výsledku v 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>

Nalezeny alternativní kódy

RIV/60460709:41330/15:#0000107 RIV/60461373:22810/15:43900037

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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(

Název v anglickém jazyce

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

Popis výsledku anglicky

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(

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CB - Analytická chemie, separace

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Molecular Physics

ISSN

0026-8976

e-ISSN

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Svazek periodika

113

Číslo periodika v rámci svazku

21

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

3264-3270

Kód UT WoS článku

000363980300014

EID výsledku v databázi Scopus

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