The Extraction of Strontium and Barium with a Solution of Bis-1,2-Dicarbollylcobaltate in Nitrobenzene in the Presence of 18-Crown-6

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Title:The Extraction of Strontium and Barium with a Solution of Bis-1,2-Dicarbollylcobaltate in Nitrobenzene in the Presence of 18-Crown-6
Creators:
Vaňura, Petr
Makrlík, Emanuel
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 58, 6, pp. 1324-1336

Abstract

A study has been made of the extraction of Sr and Ba in an aqueous solution of perchloric acid-18-crown-6-bis-1,2-dicarbollylcobaltate-nitrobenzene. It was found that the organic phase contains complexes of the ML<sup>2+</sup><sub>org</sub> type ( M = Sr<sup>2+</sup>, Ba<sup>2+</sup>) that are converted to ML<sub>2</sub><sup>2+</sup><sub>org</sub> when the concentration of crown (<i>c</i><sub>L</sub>) is greater than the concentration of bis-1,2-dicarbollylcobaltate (<i>c</i><sub>B</sub>). The values of the corresponding extraction constants, individual extraction constants and stability constants of the extracted species in the organic phase were determined. The system can be utilized for separation applications at concentrations here <i>c</i><sub>L</sub> &lt; <i>c</i><sub>B</sub>.

Title:The Extraction of Strontium and Barium with a Solution of Bis-1,2-Dicarbollylcobaltate in Nitrobenzene in the Presence of 18-Crown-6
Creators:
Vaňura, Petr
Makrlík, Emanuel
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:58
Number:6
Page Range:pp. 1324-1336
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19931324UNSPECIFIED
ID Code:250
Item Type:Article
Deposited On:06 Feb 2009 16:59
Last Modified:06 Feb 2009 15:59

Citation

Vaňura, Petr; Makrlík, Emanuel (1993) The Extraction of Strontium and Barium with a Solution of Bis-1,2-Dicarbollylcobaltate in Nitrobenzene in the Presence of 18-Crown-6. Collection of Czechoslovak Chemical Communications, 58 (6). pp. 1324-1336. ISSN 0010-0765

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