Extraction of cesium by the nitrobenzene solution of bis-1,2-dicarbollylcobaltate in the presence of dibenzo-18-crown-6

Extraction of cesium by the nitrobenzene solution of bis-1,2- dicarbollylcobaltate in the presence of dibenzo-18-crown-6 (DB18C6, L) was investigated. It was found, that besides hydrated cesium ion Cs-org(+) the complexes CsL(org)(+) and CsL(2,org)(+) were extracted to nitrobenzene phase, No maximums on dependencies of the cesium distribution ratio (D) on the concentration of crown in the system c(L) was found and D increased monotony with c(L). Values of extraction constants and stability constants of extracted species in nitrobenzene have been determined.