Extraction of Alkaline and Alkaline-Earth Metal Cations at Synergistic Action of Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) and Substituted Calix[n]arenes in Nitrobenzene

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Title:Extraction of Alkaline and Alkaline-Earth Metal Cations at Synergistic Action of Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) and Substituted Calix[n]arenes in Nitrobenzene
Creators:
Vaňura, Petr
Stibor, Ivan
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 63, 12, pp. 2009-2014
Uncontrolled Keywords:Calixarenes, Calcium, Water-nitrobenzene extraction system, Strontium, Dicarbollide, Barium, Carboranes, Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-)

Abstract

The extraction of alkaline and alkaline-earth metal cations at synergistic action of bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) and substituted calix[n]arenes (n = 4 and 6) in nitrobenzene was investigated. It was found that the lower-rim-substituted calix[4]arene with four (diethylcarbamoyl)methyl groups extracts calcium, strontium and barium in the systems under study much better than calixarenes which do not contain amide groups. Synergistic factor values log <i>S</i>(Ca) = 7, log <i>S</i>(Sr) = 5.5 and log <i>S</i>(Ba) = 5.4 were found. The competition of K<sup>+ </sup>and Na<sup>+ </sup>in the extraction of strontium is much lower than in analogous systems containing crown ethers. The addition of calixarene causes a synergistic effect in the extraction of sodium and an antagonistic effect in the extraction of cesium.

Title:Extraction of Alkaline and Alkaline-Earth Metal Cations at Synergistic Action of Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) and Substituted Calix[n]arenes in Nitrobenzene
Creators:
Vaňura, Petr
Stibor, Ivan
Uncontrolled Keywords:Calixarenes, Calcium, Water-nitrobenzene extraction system, Strontium, Dicarbollide, Barium, Carboranes, Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-)
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:63
Number:12
Page Range:pp. 2009-2014
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19982009UNSPECIFIED
ID Code:1440
Item Type:Article
Deposited On:06 Feb 2009 17:09
Last Modified:06 Feb 2009 16:09

Citation

Vaňura, Petr; Stibor, Ivan (1998) Extraction of Alkaline and Alkaline-Earth Metal Cations at Synergistic Action of Bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) and Substituted Calix[n]arenes in Nitrobenzene. Collection of Czechoslovak Chemical Communications, 63 (12). pp. 2009-2014. ISSN 0010-0765

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