INOR 800 |
| Organometallic palladium fluoride chemistry has been of particular interest due to potential applications in catalysis of C-F bond synthesis. Of the ten molecular palladium fluoride complexes structurally characterized so far, all have been supported by phosphine ligands and most undergo decomposition to fluorophosphoranes at elevated temperatures. Further, as shown by Vigalok, presence of two terminal fluorides renders PdF2(R2PCH2CH2CH2PR2) unstable already at room temperature. Seeking auxiliary coordination environment that imparts greater stability to Pd(II) fluoride complexes, we turned to N-heterocyclic carbene (NHC) ligands, whose transition metal complexes, including those of palladium, can be remarkably robust under strongly oxidizing and acidic conditions. In accord with the general trend, newly synthesized PdF2(Me2NHC)2 (Me2NHC = 1,3-Dimethylimidazol-2-ylidene) decomposes on the timescale of days at +60°C. Preparation, characterization and reactivity studies of PdF2(Me2NHC)2 and Pd(II) fluoride complexes with other NHC ligands will be presented. |
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Organometallics
7:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Sci-Mix
Division of Inorganic Chemistry |