Publication

A parahydrogen study of catalytic hydrogenation by diphosphane substituted triruthenium clusters

2004
Journal Articles

Abstract

The diphosphane-substituted clusters [Ru-3(CO)(10)(dppe)] and [Ru-3(CO)(8)(dppe)(2)] [dppe = 1,2-bis(diphenylphosphanyl)ethane] are shown to catalytically hydrogenate diphenylacetylene. This process is highly solvent-dependent with fragmentation dominating in low-polarity solvents, which indicates that the dppe ligand does not stabilise the cluster under catalytic conditions. In solvents of higher polarity, the clusters are active hydrogenation catalysts of lower activity than their monodentate phosphane analogues [Ru-3(CO)(10)(L)(2)] (L PPh3, PMe2Ph, PMe3, PCy3). ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004).

Official source

https://infoscience.epfl.ch/entities/publication/4c04e45e-c49a-4d11-aa70-f467e019a3ae

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2004
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/4c04e45e-c49a-4d11-aa70-f467e019a3ae

About this result

Related concepts (27)

Solvent

A solvent (from the Latin solvō, "loosen, untie, solve") is a substance that dissolves a solute, resulting in a solution. A solvent is usually a liquid but can also be a solid, a gas, or a supercritical fluid. Water is a solvent for polar molecules and the most common solvent used by living things; all the ions and proteins in a cell are dissolved in water within the cell. Major uses of solvents are in paints, paint removers, inks, and dry cleaning. Specific uses for organic solvents are in dry cleaning (e.

Asymmetric hydrogenation

Asymmetric hydrogenation is a chemical reaction that adds two atoms of hydrogen to a target (substrate) molecule with three-dimensional spatial selectivity. Critically, this selectivity does not come from the target molecule itself, but from other reagents or catalysts present in the reaction. This allows spatial information (what chemists refer to as chirality) to transfer from one molecule to the target, forming the product as a single enantiomer.

Hydrogenation

Hydrogenation is a chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to reduce or saturate organic compounds. Hydrogenation typically constitutes the addition of pairs of hydrogen atoms to a molecule, often an alkene. Catalysts are required for the reaction to be usable; non-catalytic hydrogenation takes place only at very high temperatures.

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A parahydrogen study of catalytic hydrogenation by diphosphane substituted triruthenium clusters

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