Medium- and High-nuclearity Clusters of Ru/Os

Humphrey, Mark G.; Cifuentes, Marie P.

doi:10.1016/b0-08-045047-4/00191-6

Comprehensive Organometallic Chemistry III 2007

DOI: 10.1016/b0-08-045047-4/00191-6

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Medium- and High-nuclearity Clusters of Ru/Os

Mark G. Humphrey

Marie P. Cifuentes

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2008

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Basal-Edge-Bridged Square-Pyramidal Hexaruthenium Carbonyl Clusters: Synthesis, Structure, and Reactivity

Cabeza

García‐Álvarez

2008

Organometallics

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This paper reviews the current knowledge on the synthesis, structure, and reactivity of basal-edgebridged square-pyramidal hexaruthenium carbonyl cluster complexes, covering the literature up to the end of 2007. These clusters are generally prepared at high temperature (>100 °C) through processes that involve a ligand-promoted condensation of two triruthenium clusters. All cluster complexes of this type contain a bridging ligand with an S-, C-, or N-donor fragment capping the four basal metal atoms of the pyramid. When the bridging ligand is bi-or polydentate, it is also bound to the edge-bridging metal atom. The reactivity of [Ru 6 (µ 3 -H) 2 (µ 5 -κ 2 -ampy)(µ-CO) 2 (CO) 14 ] (H 2 ampy ) 2-amino-6-methylpyridine) with various reagents has been recently investigated. Its reactions with unsaturated hydrocarbons (carbocycles, alkynes, diynes, alkenes) often involve multisite coordination and hydrogenation or dehydrogenation of the original reagents. The release of an Ru(CO) n fragment (the only one that is not bound to the bridging ampy ligand) or its exchange between hexanuclear species is also frequently observed. This leads to penta-and heptanuclear clusters as final products. The reactivity of [Ru 6 (µ 3 -H) 2 (µ 5 -κ 2 -ampy)(µ-CO) 2 (CO) 14 ] with other reagents (triphenylphosphine, hydrides, H 2 ampy) and its thermolysis in solution are also surveyed.

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Basal-Edge-Bridged Square-Pyramidal Hexaruthenium Carbonyl Clusters: Synthesis, Structure, and Reactivity

Cabeza

García‐Álvarez

2008

Organometallics

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Medium- and High-nuclearity Clusters of Ru/Os

Cited by 1 publication

References 253 publications

Basal-Edge-Bridged Square-Pyramidal Hexaruthenium Carbonyl Clusters: Synthesis, Structure, and Reactivity

Basal-Edge-Bridged Square-Pyramidal Hexaruthenium Carbonyl Clusters: Synthesis, Structure, and Reactivity

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