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Synlett 1990; 1990(9): 493-500
DOI: 10.1055/s-1990-21140
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The Synthesis and Novel Reactivity of Homo- and Heterodinuclear Fulvalene Metal Carbonyls

Patricia A. McGovern* , K. Peter C. Vollhardt
  • *Department of Chemistry, University of California at Berkeley, and the Materials and Chemical Sciences Division, Lawrence Berkeley Laboratory, Berkeley, California 94720, USA
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Publication Date:
08 March 2002 (online)

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The preparation and reaction chemistry of homodinuclear fulvalene metal carbonyl complexes is described. Their study led to the development of the first controlled approach to heterodinuclear derivatives. Unique reactivity has been observed for these complexes. A second, more efficient synthetic strategy was developed that utilizes a cyclopentadienyl-substituted cyclopentenone as a precursor to fulvalene, allowing for the selective, step-wise complexation of transition metals. 1. Introduction 2. Homodinuclear Fulvalene Metal Carbonyls 2.1. Synthesis from Dihydrofulvalene and Metal Carbonyls 2.2. Properties of Homodinuclear Fulvalene Metal Carbonyls 3. The Thermally Reversible Photoisomerization of FvRu2(CO)6 4. Phosphine-Induced Formation of Organometallic Zwitterions and Stable "Ring-Slipped" Complexes 5. Photoreactivity of FvRuMo(CO)5 6. Synthesis of Heterodinuclear Fulvalene Metal Carbonyls 6.1. Mixed-Metal Systems of Molybdenum and Ruthenium 6.2. Site-Selective Metal Complexation 7. Conclusion