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Volumn 23, Issue 8, 2007, Pages 1003-1006

Hydration effect on the ion-pair extraction of lithium picrate by hydrophobic benzo-15-crown-5 ether into various less-polar diluents

(4) Kudo, Yoshihiro a Fujihara, Ryo a Katsuta, Shoichi a Takeda, Yasuyuki a

a CHIBA UNIVERSITY (Japan)

Author keywords

[No Author keywords available]

Indexed keywords

EQUILIBRIUM CONSTANTS; ETHERS; HYDRATION; IONIC STRENGTH; IONS; POTENTIOMETERS (ELECTRIC MEASURING INSTRUMENTS); SOLVENT EXTRACTION;

CONCENTRATION EQUILIBRIUM; DISTRIBUTION CONSTANT; EXTRACTION CONSTANTS; ION PAIR EXTRACTION; ION-PAIR COMPLEXES; ION-PAIR FORMATION CONSTANTS; SELECTIVE ELECTRODES; SOLVENT EXTRACTION METHODS;

LITHIUM COMPOUNDS;

EID: 49749145615 PISSN: 09106340 EISSN: 13482246 Source Type: Journal
DOI: 10.2116/analsci.23.1003 Document Type: Article

Times cited : (7)

References (13)

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2
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- Kudo, Y.¹ Usami, J.² Katsuta, S.³ Takeda, Y.⁴

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7
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- Y. Takeda, M. Tanaka, H. Yamada, and S. Katsuta, J. Coord. Chem, 2002, 55, 459. We tried to determining the K Li15C5 value in water, requested for a KLi(15C5)Pic computation, by conductometry and ion-transfer polarography at a nitrobenzene/w-solution interface. However, its value has not been determined, because less change of the molar conductivity vs, 15C5] t/[Li+]t plot was observed in the former method and also meaningful intercept in the FA vs. 1/[Li, t plot was not obtained in the latter one. Here, the symbol FA is a function of a half-wave potential for the facilitated ion-transfer at the interface. Therefore, reestimated data of the LiPic-15C5 extraction system could not be obtained for comparison with that of the present system
- A is a function of a half-wave potential for the facilitated ion-transfer at the interface. Therefore, reestimated data of the LiPic-15C5 extraction system could not be obtained for comparison with that of the present system.

8
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10
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- The log Kex values for the NaPic-B15C5 system were revised by correcting activity coefficients in the data of Ref. 4. Then, the log KD,MLA values were estimated from the relation in the text. Their log Kex (I of the w-phase) and log K D,MLA values were: 3.637 ± 0.008 (0.022 mol dm-3) and 3.02 for DCM; 3.312 ± 0.012 (0.022) and 2.68 for CF; 3.760 ± 0.024 (0.021) and 2.63 for DCE; 3.089 ± 0.005 (0.022) and 0.67 for CBu; 3.204 ± 0.009 (0.022) and 1.32, 3.308 ± 0.015 (0.0063) and 1.37 for Bz; 3.179 ± 0.013 (0.022) and 1.06 for TE; 3.151 ± 0.005 (0.022) and 0.81 for mX; 3.629 ± 0.016 (0.022) and 1.93 for CB; 3.646 ± 0.008 (0.022) and 1.97 for BB; 3.738 ± 0.009 (0.022) and 2.06 for oDCB, respectively. Accordingly, the regression line was recalculated: log KD,MLA, 1.387 ± 0.11
- 8) with R = 0.974.

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- This finding may come from the fact that the interaction of H 2O with Na(15C5)Pic is somewhat smaller than that with K(15C5)Pic. See Ref. 4
- 2O with Na(15C5)Pic is somewhat smaller than that with K(15C5)Pic. See Ref. 4.

13
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