INOR 16 |
| Oxidation of Group IV complexes with ortho-amidophenolate ligands affords a new family of complexes with ligand-centered radical semi-quinonate ligands. Halogen and peroxide substrates add in an oxidative-addition-like way to zirconium(IV) and hafnium(IV) complexes chelated by amidophenolate ligands. Since the metal center cannot supply the necessary reducing equiavlents, ligand-center oxidation occurs upon M-X bond formation. The products are ligand-centered diradicals and display the attendant temperature-dependent magnetization, which is sensitive to both the nature of the metal and the oxidizing substrate. Generation of alkyl and amide derivative of these diradical complexes leads to reductive elimination chemistry, with facile formation of C-C, N-N, and C-N bonded products. |
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Coordination Chemistry: Characterization and Applications
8:40 AM-12:40 PM, Sunday, 10 September 2006 Moscone Center -- Room 301, Oral
Division of Inorganic Chemistry |