Extraction of alkali metal, magnesium and calcium ions with cyclopentadienyltris(diethylphosphito-P)cobaltate(−1)

✍ Scribed by H. Bukowsky; E. Uhlemann; W. Kläui

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 323 KB
• Volume: 319
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(95)00491-2

✦ Synopsis

The extraction of lithium, sodium, potassium, magnesium and calcium ions with the oxygen tripod ligand cyclopentadienyltris(diethylphosphito-P)cobaltate( -0, [(c,H,)co{P(oXOC,H,),),I-has been studied as a function of pH and ligand concentration. Lif could be successfully separated from Na+ and K+. The separation of Li+ from Ca*+ and Mg2+ was achieved by masking Mg'+ and Ca2+ with EDTA or by precipitating them with the ligand before Li extraction. The composition and stability constants have been determined for the complexes of Li+, Mg2+, and Ca'+.