A parahydrogen study of catalytic hydrogenation by diphosphane substituted triruthenium clusters

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).


Published in:
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 22, 4381-4387
Year:
2004
ISSN:
1434-1948
Keywords:
Laboratories:




 Record created 2005-11-09, last modified 2018-03-17


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