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Speciation study of binary complexes of pb (ii), cd (ii) and hg (ii) with 1, 10-phenanthroline in acetonitrile-water mixtures
International Journal of Chemical Studies · 2017 · Vol. 5(4) · pp. 970–974
Abstract
Speciation of Pb(II), Cd(II) and Hg(II) complexes of 1,10-phenanthroline has been studied pH metrically in acetonitrile –water mixtures (0.0-60.0 % v/v) at 303 K and an ionic strength of 0.16M. The predominant species detected are ML and ML3 for Pb(II); ML2, ML3 for Cd(II) and Hg(II). The trend in the variation of stability constants of these species with decreasing dielectric constants of the medium is attributed to the electrostatic forces and the complexing ability of the co-solvent. The species distribution and the feasible equilibria for the formation of the species are also presented.
Chemical and Physical Properties in Aqueous SolutionsIonic liquids properties and applicationsAnalytical Chemistry and ChromatographyChemistryGenetic algorithmIonic strengthAcetonitrilePhenanthrolineStability constants of complexesTernary operationInorganic chemistryChelationSolvent
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