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Interaction of gold(I) with thiosulfate–sulfite mixed ligand systems

Perera, W.N., Senanayake, G. and Nicol, M.J. (2005) Interaction of gold(I) with thiosulfate–sulfite mixed ligand systems. Inorganica Chimica Acta, 358 (7). pp. 2183-2190.

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The Au(I)-SO32- - S2O32- system was studied at 25°C and at I = 0.1 M NaClO4 using hydrodynamic voltammetry, gold potentiometry, UV-Vis spectrophotometry and Raman spectroscopy. The presence of two mixed-ligand species, Au(S 2O3)(SO3)3- and Au(S 2O3)(SO3)25-, was detected from the Raman experiments and supported by the gold potentiometric experiments. The stepwise formation constant, log K11r, for the reaction Au(S 2O3)23-+rSO32-⇔Au(S2O3)(SO3)r-(2r+1)+S2O32- was found to be 1.1 (r = 1) and 4.8 (r = 2) from the hydrodynamic voltammetric experiments.

Publication Type: Journal Article
Murdoch Affiliation: Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions
Publisher: Elsevier BV
Copyright: © 2004 Elsevier B.V.
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