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Group 6 imido complexes supported by diamido-donor ligands
Benjamin D Ward1, Stuart R Dubberley, Lutz H Gade
1Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, U.K., and Laboratoire de Chimie Organométallique et de Catalyse UMR 7513, Institut Le Bel, Université Louis Pasteur, 4, rue Blaise Pascal, 67000 Strasbourg, France.
Inorganic Chemistry
|August 5, 2003
Summary
New tungsten and molybdenum imido complexes were synthesized using diamido-pyridine and diamido-amine ligands. These novel organometallic compounds were characterized, expanding the scope of imido ligand chemistry in transition metal complexes.
Area of Science:
- Organometallic Chemistry
- Inorganic Chemistry
- Coordination Chemistry
Background:
- Diamido-pyridine and diamido-amine ligands offer unique coordination environments.
- Tungsten and molybdenum imido complexes are important in catalysis and materials science.
Purpose of the Study:
- To synthesize and characterize novel tungsten and molybdenum imido complexes featuring diamido-pyridine and diamido-amine ligands.
- To explore the reactivity of these new complexes.
Main Methods:
- Reaction of lithiated diamido-pyridine or diamido-amine ligands with tungsten and molybdenum precursors.
- Characterization of products using single crystal X-ray diffraction.
Main Results:
- Synthesis of imido-dichloride tungsten complexes [W(NAr)(N(2)N(py))Cl(2)] and [W(NAr)(N(2)N(am))Cl(2)].
- Formation of dimethyl and diphenyl tungsten complexes [W(NPh)(N(2)N(py))R(2)].
- Preparation of bis(imido) molybdenum complexes [Mo(NR)(2)(N(2)N(py))] and [Mo(N(t)Bu)(2)(N(2)N(am))].
Conclusions:
- The study successfully synthesized and characterized a range of novel tungsten and molybdenum imido complexes.
- The results demonstrate the versatility of diamido-pyridine and diamido-amine ligands in constructing diverse organometallic structures.