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Steric and hydrophobic effects of substituents in extraction of metal complexes with O,O-dialkyldithiophosphoric acids
Authors
Garifzyanov A.
Panfilova I.
Toropova V.
Publication date
1 January 1987
Publisher
Abstract
The two-phase stability constants (equilibrium constants) of metal complexes MAn [Mn+ = Ni(II), Zn(II), Cd(II), Pb(II), Tl(I), In(III)] with a series of O,O-dialkyldithiophosphoric acids in the system water-organic solvent) have been determined. By use of correlation analysis the role of the steric and hydrophobic effects of the substituents at the phosphorus atom on the stability constant βn and distribution constant P of the complexes has been elucidated. The data obtained are of use for determining the relationships in the influence of structure of a reagent on its extraction properties and on the conditions for practical application of O,O-dialkyldithiophosphoric acids for metal extraction. © 1987
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Last time updated on 07/05/2019