Selective Extraction of Lithium with a Macrocyclic Trinuclear Complex of (1,3,5-Trimethylbenzene)ruthenium(II) Bridged by 2,3-Dioxopyridine

A macrocyclic trinuclear complex of (1,3,5-trimethylbenzene)ruthenium(II) bridged by 2,3-dioxopyridine was synthesized, and the extraction properties for lithium and sodium picrates were investigated in a dichloromethane/water system at 25°C. The complex was found to have extremely high extractabili...

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Bibliographic Details
Published in:Analytical Sciences 2008/10/10, Vol.24(10), pp.1215-1217
Main Authors: KATSUTA, Shoichi, IMOTO, Takahiro, KUDO, Yoshihiro, TAKEDA, Yasuyuki
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Rapid Communications
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Summary:A macrocyclic trinuclear complex of (1,3,5-trimethylbenzene)ruthenium(II) bridged by 2,3-dioxopyridine was synthesized, and the extraction properties for lithium and sodium picrates were investigated in a dichloromethane/water system at 25°C. The complex was found to have extremely high extractability and selectivity for lithium picrate; the logarithmic values of the extraction constants are 5.86 and 2.63 for Li+ and Na+, respectively. By using this complex as an extractant, nearly quantitative extraction and separation of Li+ from Na+ could be achieved by a single extraction.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.24.1215