Abstract
The reaction of [RuIII(EDTA)(H2O/OH)]−/2− (EDTA4− = ethylenediaminetetraacetate) with bisulfide (HS−) and persulfide (HSS−) leading to the formation of a dinuclear disulfur-bridged [(EDTA)RuIIISSRuIII(EDTA)]4− product has been studied spectrophotometrically. Kinetics of the reaction of [RuIII(EDTA)(H2O/OH)]−/2− with HS− was studied in aqueous solution as a function of [HS-] at a constant pH of 8.2 (phosphate buffer) and temperature (20 °C). Formation of the product complex, [(EDTA)RuIIISSRuIII(EDTA)]4−, in the reaction of [RuIII(EDTA)(H2O/OH)]−/2− with HSS− was identified by ESI-MS studies. A working mechanism in agreement with the spectroscopic and kinetic data is presented.
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Acknowledgements
M.O. acknowledges financial support from the National Science Centre (Grant no. DEC-2016/23/D/ST4/00303).
Disclosure statement
No potential conflict of interest was reported by the authors.