INOR 206 |
| A unique thiol, especially 4-pyridinethiol (4-PS), assisted dissolution of elemental Au in alcohol solutions is reported. Further understanding of the dissolution process was gained by studying the influence of the reaction conditions. On the basis of the obtained results, a mechanism for the dissolution reaction is proposed. By tuning of the reaction conditions, this phenomenon can be applied in selective preparation of self-supporting nanometer-thick Au foils. Zwitterionic form of pyridinethiol, which plays a crucial role in the oxidation of Au, was also observed to coordinate to gold(I) during synthesis of bis(pyridinium-2-thiolato)gold(I) chloride (1) and bis(pyridinium-4-thiolato)gold(I) chloride (2). The solid state structure of 1 revealed a planar geometry with linear coordination of Au(I) and the presence of gamma-agostic interactions. A density functional theory calculation on 1 reproduces the observed X-ray structure and illustrates a similar structure for 2. |
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General Inorganic Chemistry
7:00 PM-10:00 PM, Sunday, August 19, 2007 BCEC -- Exhibit Hall - B2, Poster
Division of Inorganic Chemistry |