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Extraction of Barium with Bis[Undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(l-) in the Presence of 18-Crown-6

M. Daňková, P. Vaňura, E. Makrlík, and V. Bečkováa

Kremličkova 964, CZ-280 00 Kolín

 

Abstract: Extraction of microamounts of barium with a nitrobenzene solution of cesium bis[undecahydro-7,8-dicarbaundecaborato(2-)]cobaltate(1-) (abbr. Cs+B-) in the presence of 18-crown-6 (18C6, L) has been investigated. The equilibrium data have been explained assuming that the complexes CsL+, CsL2+, BaL2+, and BaL22+ are extracted into the organic phase. The values of extraction and stability constants of the species in nitrobenzene saturated with water have been determined.

Full paper in Portable Document Format: 544a226.pdf

 

Chemical Papers 54 (4) 226–230 (2000)

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