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Australian Journal of Chemistry Australian Journal of Chemistry Society
An international journal for chemical science
RESEARCH ARTICLE

The Extraction of Cobalt(II) From Oxalate Solutions by Aliquat-336 Dissolved in Chloroform

R Paimin and RW Cattrall

Australian Journal of Chemistry 39(7) 987 - 995
Published: 1986

Abstract

A study is reported of the extraction of cobalt(II) from oxalate solutions by Aliquat 336 in chloroform. Equilibrium studies by two-phase titration show that the predominant organic-phase complex has the formula [(R3MeN)2Co(C2O4)2]. It is proposed that this species is formed by extraction of the anionic complex Co(C2O4)22- involving interfacial reactions. There is evidence for the formation of a small amount of the complex [(R3MeN)4Co(C2O4)3]. The extraction mechanism proposed is based on a study with the single-drop technique, and is supported by interfacial tension measurements and measurements with a stirred cell of constant interfacial area.

https://doi.org/10.1071/CH9860987

© CSIRO 1986

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