INOR 804 |
| A series of transition metal π-bases has been successfully developed as dearomatization agents for a broad range of arenes and aromatic heterocycles through dihapto coordination. As the electron-richness of these metal complexes is increased, there is a greater propensity for oxidative addition of the metal into O-H, N-H, and C-H bonds of the η2-coordinated ligand despite the presence of a rigid, tridentate Tp ligand. Unlike the less electron-rich {Os(NH3)5}2+ and {TpRe(CO)(N-methylimidazole)} dearomatization agents, the {TpW(NO)(PMe3)} π-base activates O-H and N-H bonds resulting in tungsten hydrides that are isolated as stable seven-coordinate complexes. Aryl C-H activation has been observed to be reversible for these complexes. The {TpW(NO)(PMe3)} fragment also activates C-F bonds in a similar manner to give analogous seven-coordinate complexes. |
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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 |