Kinetics and Mechanism for Reduction of trans-Dichlorotetracyanoplatinate(IV) by Thioglycolic Acid, L-Cysteine, D,L-Penicillamine, and Glutathione in Aqueous Solution
SynopsisVarious protolytic species of thiols RSH (thioglycolic acid, l-cysteine, dl-penicillamine, and glutathione) in rapid equilibria with each other reduce trans-[Pt(CN)4Cl2]2- in parallel, halide-bridged electron transfer reactions. A linear Brønsted correlation between the reactivity of the thiolate anions RS- and their basicity is observed. The mechanism derived might be used as a model for