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Updated: Mar 18, 2026

In Situ Synthesis of Gold Nanoparticles without Aggregation in the Interlayer Space of Layered Titanate Transparent Films
Published on: January 17, 2017
The influence of gold(i) on the mechanism of thiolate, disulfide exchange
Gamage S P Garusinghe1, S Max Bessey, Alice E Bruce
1University of Maine, Department of Chemistry, Orono, ME 04469-5706, USA. abruce@maine.edu mbruce@maine.edu.
Abstract:
The mechanism of gold(i)-thiolate, disulfide exchange was investigated by using initial-rate kinetic studies, 2D ((1)H-(1)H) ROESY NMR spectroscopy, and electrochemical/chemical techniques. The rate law for exchange is overall second order, first order in gold(i)-thiolate and disulfide. 2D NMR experiments show evidence of association between gold(i)-thiolate and disulfide. Electrochemical/chemical investigations do not show evidence of free thiolate and are consistent with a mechanism involving formation of a [Au-S, S-S], four-centered metallacycle intermediate during gold(i)-thiolate, disulfide exchange.
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