Alkyl-metal and aryl-metal bond chemistry in coordinately unsaturated polynuclear metal complexes
AUTOR(ES)
Schmidt, G. F.
RESUMO
A new class of coordinately unsaturated polynuclear rhodium and iridium alkyl, benzyl, and aryl derivatives of the form [RM(1,5-cyclooctadiene)]x have been prepared by the reaction of the organolithium reagent with the cyclooctadienemetal chlorides at -78°C. The x-ray crystal structure of [μ-CH3Rh (1,5-cyclooctadiene)]2 is reported. The analogous iridium dimer decomposes by an initial sequence of α-hydrogen abstraction and then reductive elimination of hydrogen to give [μ-CH2Ir(1,5-cyclooctadiene)]2. Formed in high yield by the decomposition of the ethylrhodium complex was [HRh(C8H11)]4, a tetrahedral cluster with face-bridging hydride ligands. Also discussed are the reactivities of the benzyl and phenyl derivatives. Unique reaction pathways for C—H bond activation and scission in this chemistry are delineated.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=319119Documentos Relacionados
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