Calix[4]arene-bis(t-octylbenzo-18-crown-6) as an extraordinarily effective 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%2F14%3A43897071" target="_blank" >RIV/60461373:22340/14:43897071 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60460709:41330/14:64646

Výsledek na webu

<a href="http://dx.doi.org/10.1007/s11224-013-0349-3" target="_blank" >http://dx.doi.org/10.1007/s11224-013-0349-3</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s11224-013-0349-3" target="_blank" >10.1007/s11224-013-0349-3</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Calix[4]arene-bis(t-octylbenzo-18-crown-6) as an extraordinarily effective macrocyclic receptor for the univalent thallium cation

Popis výsledku v původním jazyce

From extraction experiments and -activity measurements, the exchange extraction constant corresponding to the equilibrium Tl+ (aq) + 1 center dot Cs+ (org) a double dagger" 1 center dot Tl+ (org) + Cs+ (aq) taking place in the two-phase water-phenyltrifluoromethyl sulfone (abbrev. FS 13) system (1 = calix[4]arene-bis(t-octylbenzo-18-crown-6); aq = aqueous phase, org = FS 13 phase) was evaluated as log K (ex) (Tl+, 1 center dot Cs+) = 1.7 +/- A 0.1. Further, the extraordinarily high stability constant ofthe 1 center dot Tl+ complex in FS 13 saturated with water was calculated for a temperature of 25 A degrees C: log beta (org)(1 center dot Tl+) = 13.1 +/- A 0.2. Finally, by using quantum mechanical DFT calculations, the most probable structure of the cationic complex species 1 center dot Tl+ was derived. In the resulting 1 center dot Tl+ complex, the "central" cation Tl+ is bound by eight bond interactions to six oxygen atoms from the respective 18-crown-6 moiety and to two carbons of

Název v anglickém jazyce

Calix[4]arene-bis(t-octylbenzo-18-crown-6) as an extraordinarily effective macrocyclic receptor for the univalent thallium cation

Popis výsledku anglicky

From extraction experiments and -activity measurements, the exchange extraction constant corresponding to the equilibrium Tl+ (aq) + 1 center dot Cs+ (org) a double dagger" 1 center dot Tl+ (org) + Cs+ (aq) taking place in the two-phase water-phenyltrifluoromethyl sulfone (abbrev. FS 13) system (1 = calix[4]arene-bis(t-octylbenzo-18-crown-6); aq = aqueous phase, org = FS 13 phase) was evaluated as log K (ex) (Tl+, 1 center dot Cs+) = 1.7 +/- A 0.1. Further, the extraordinarily high stability constant ofthe 1 center dot Tl+ complex in FS 13 saturated with water was calculated for a temperature of 25 A degrees C: log beta (org)(1 center dot Tl+) = 13.1 +/- A 0.2. Finally, by using quantum mechanical DFT calculations, the most probable structure of the cationic complex species 1 center dot Tl+ was derived. In the resulting 1 center dot Tl+ complex, the "central" cation Tl+ is bound by eight bond interactions to six oxygen atoms from the respective 18-crown-6 moiety and to two carbons of

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

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Structural Chemistry

ISSN

1040-0400

e-ISSN

—

Svazek periodika

25

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

847-852

Kód UT WoS článku

000334514700016

EID výsledku v databázi Scopus

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