P. Sladek, O. Navratil, E. Herrmann
1999
Citations
0
Influential Citations
2
Citations
Journal
Czechoslovak Journal of Physics
Abstract
Some polydentate μ-imido organophosphorus compounds, in particular bidentate aryl esters of imidodiphosphoric acid, (RO)2P(X)NHP(Y)(OR)2 where X, Y=O or S and R=aryl group can be used as efficient extractants for liquid extraction and separation of many metals. The possibilities of alkaline earth elements extraction (Ca, Ba and Sr) by means of μ-imidophosphorus reagents were studied. The effect of substitution of one ester group by-OH or-NH2 groups as well as the extraction efficiency of some metals and organic diluents were examined. Significant dimerisation and distribution constants of the reagents were calculated.