104780-08-7

Basic information

• Product Name: dicarbonyl(cyclopentadienyl)-μ3-ethylidine-μ3-hydrido-triangulo-(tricarbonylcobalt)(tricarbonylruthenium)tungsten(Co-Ru,Co-W,Ru-W)
• Synonyms: dicarbonyl(cyclopentadienyl)-μ3-ethylidine-μ3-hydrido-triangulo-(tricarbonylcobalt)(tricarbonylruthenium)tungsten(Co-Ru,Co-W,Ru-W)
• CAS NO: 104780-08-7
• Molecular Weight: 661.145
• Mol File: 104780-08-7.mol

Chemical Properties

• CAS DataBase Reference: dicarbonyl(cyclopentadienyl)-μ3-ethylidine-μ3-hydrido-triangulo-(tricarbonylcobalt)(tricarbonylruthenium)tungsten(Co-Ru,Co-W,Ru-W)(CAS DataBase Reference)
• NIST Chemistry Reference: dicarbonyl(cyclopentadienyl)-μ3-ethylidine-μ3-hydrido-triangulo-(tricarbonylcobalt)(tricarbonylruthenium)tungsten(Co-Ru,Co-W,Ru-W)(104780-08-7)
• EPA Substance Registry System: dicarbonyl(cyclopentadienyl)-μ3-ethylidine-μ3-hydrido-triangulo-(tricarbonylcobalt)(tricarbonylruthenium)tungsten(Co-Ru,Co-W,Ru-W)(104780-08-7)

Safety Data

• Hazardous Substances Data: 104780-08-7(Hazardous Substances Data)

Upstream product

• 108036-67-5 (μ3-MeC)CoRuWCp(CO)7(C(Me)(COOMe)NHC(Me)O) 
• 122443-01-0 (μ3-MeC)RuCoWCp(CO)7(OC(OMe)CH2CH(COOMe)) 

Relevant articles and documents

Reversible and Diastereospecific Insertion of 2-Acetamidoacrylic Methyl Ester into the Metal-Hydrogen Function of Chiral Clusters

The chiral hydrido metal clusters (μ3-RC)CoMM'Cp(CO)8H (R = Me, Ph; M = Ru, Os; M'= Mo, W) (1a-5a) react with the prochiral alanine precursor 2-acetamidoacrylic methyl ester by insertion into the M-H function and substitution of a CO group.In a diastereospecific reaction cluster adducts 1b-5b with a five-membered M-C-N-C-O ring are formed which contain an M-C ?-bond involving a tertiary carbon atom.This has been confirmed by a crystal structure determination of the RuCoMo compound 1b.Deuteration experiments have ascertained that the reaction is of the Markownikow-type.The enamide substrate is regenerated with CO or PPh3, it is not hydrogenerated with H2.A partial enantiomer separation of the insertion products is possible by chromatography over triacetylcellulose.The subsequent elimination of the enamide by CO or PPh3 is accompanied by nearly quantitative racemisation of the cluster. - Key Words: Clusters, hydrido metal / Insertion, diastereospecific

Stoichiometric and Catalytic Reactions of Fumaric and Maleic Esters with Chiral Hydrido-Metal Clusters

The clusters (μ3-MeC)MCoM'Cp(CO)8H with M = Ru, Os and M'= Mo, W (1a-4a) react with methyl fumarate and maleate to form the same products (1b-4b).These result from the diastereospecific insertion of the C-C double bond into the metal-hydrogen function with subsequent CO elimination and formation of a metallacyclic five membered ring, as shown by crystal structure determinations of the RuCoW and OsCoW compounds 2b and 4b.Deteration experiments point to a rapid exchange between the cluster olefin insertion product and its free components.CO or PPh3 liberate methyl maleate from the adducts, hydrogenation with H2 cannot be achieved.Catalytic amounts of the RuCoMo or RuCoW cluster affect the conversion of various fumaric esters to the corresponding maleic esters with high turnover numbers.The course of the catalytic reaction can be completely derived from the stoichiometric reactions and their products. - Key Words: Clusters, hydrido metal / Olefin reactions